Three-component reaction between isatoic anhydride, amine and meth-yl-subs-tituted furyl-acryl-alde-hydes: crystal structures of 3-benzyl-2-[(E)-2-(5-methylfuran-2-yl)vin-yl]-2,3-di-hydro-quinazolin-4(1H)-one, 3-benzyl-2-[(E)-2-(furan-2-yl)-1-methyl-vin-yl]-2,3-di-hydro-quinazolin-4(1H)-one and 3-(furan-2-ylmeth-yl)-2-[(E)-2-(furan-2-yl)-1-methyl-vin-yl]-2,3-di-hydro-quinazolin-4(1H)-one.

Compounds (I), C22H20N2O2, (II), C22H20N2O2 and (III), C20H18N2O3 are the products of three-component reactions between isatoic anhydride, the corresponding amine and 3-(5-methylfuran-2-yl)- or (furan-2-yl)-2-methyl-acryl-aldehyde. Compound (I) crystallizes in the monoclinic space group P21/n, while compounds (II) and (III) are isostructural and crystallize in the ortho-rhom-bic space group Pbca. The tetra-hydro-pyrimidine ring in (I)-(III) adopts a sofa conformation. The NH nitro-gen atom has a trigonal-pyramidal geometry, whereas the N(R) nitro-gen atom is flattened. The furyl-vinyl substituents in (I)-(III) are practically planar and have an E configuration at the C=C double bond. In (I), this bulky fragment occupies the axial position at the quaternary carbon atom of the tetra-hydro-pyrimidine ring, whereas in (II) and (III) it is equatorially disposed. In the crystal of (I), mol-ecules form hydrogen-bonded chains propagating along [001] by strong inter-molecular N-H⋯O hydrogen bonds. The chains are packed in stacks along the a-axis direction. In the crystals of (II) and (III), mol-ecules also form hydrogen-bonded chains propagating along [100] by strong inter-molecular N-H⋯O hydrogen bonds. However, despite the fact that compounds (II) and (III) are isostructural, steric differences between the phenyl and furyl substituents result in chains with different geometries. Thus in the crystal of (II) the chains have a zigzag-like structure, whereas in the crystal of (III), they are almost linear. In both (II) and (III), the hydrogen-bonded chains are further packed in stacks along the b-axis direction.

Chemical context

3-Aryl- and 3-hetaryl-substituted allyl­amines and allylic alcohols are readily available and are common starting materials for the synthesis of complex cyclic systems with useful properties (Frackenpohl et al., 2016 ▸; Celltech R&D Ltd, 2004 ▸).

As depicted in Fig. 1 ▸, these substances most often undergo an N-acyl­ation reaction with unsaturated anhydrides or acyl chlorides to trigger the subsequent intra­molecular Diels–Alder cyclization. As a result, this sequence gives functionalized two- or three-membered heterocycles. A wide range of dienes (Tomberg et al., 2015 ▸; Magedov et al., 2012 ▸; Slauson et al., 2015 ▸; Sun et al., 2000 ▸), arenes (Hu et al., 2010 ▸; Sun et al., 2000 ▸; Yamazaki et al., 2016 ▸; Kocsis et al., 2015 ▸) and various heterocycles (Lu et al., 2005 ▸; Kim et al., 2014 ▸; He et al., 2011 ▸) can be applied in this transformation.

Figure 1

One of the synthetic pathways for the exploration of 3-substituted allyl­amines and allylic alcohols.

Until now, only one example of the synthesis of 3-(fur­yl)allyl­amines linked to a quinazoline fragment has been described in literature (Zaytsev et al., 2015 ▸). 2-Vinyl­furylquinazolinones containing no methyl groups were obtained by a three-component reaction between isatoic anhydride, a primary amine, and furylacrolein. Some further transformation of these quinazolinones has been demonstrated.

This communication pursues the aim of acquiring structural information about 2-vinyl­furylquinazolinones bearing a methyl group on the furan ring or at the double bond of the allyl­amine fragment, with the aim of further elucidating all aspects of its inter­action with α,β-unsaturated acid anhydrides.

Structural commentary

Compounds (I), C22H20N2O2, (II), C22H20N2O2 and (III), C20H18N2O3 (Figs. 2 ▸–4 ▸ ▸) are the products of three-component reactions between isatoic anhydride, the corresponding amine and 3-(5-methylfuran-2-yl)- or (furan-2-yl)-2-methyl­acryl­aldehyde. Compound (I) crystallizes in the monoclinic space group P21/n, while compounds (II) and (III) are isostructural and crystallize in the ortho­rhom­bic space group Pbca.

Figure 2

Mol­ecular structure of (I). Displacement ellipsoids are shown at the 50% probability level. H atoms are presented as small spheres of arbitrary radius.

Figure 3

Mol­ecular structure of (II). Displacement ellipsoids are shown at the 50% probability level. H atoms are presented as small spheres of arbitrary radius.

Figure 4

Mol­ecular structure of (III). Displacement ellipsoids are shown at the 50% probability level. H atoms are presented as small spheres of arbitrary radius.

The tetra­hydro­pyrimidine ring in (I)–(III) adopts a sofa conformation, with the C2 carbon atom deviating from the mean plane of the other atoms of the ring by 0.639 (2), 0.476 (3) and 0.465 (3) Å, respectively. The nitro­gen atom N1 has a trigonal–pyramidal geometry [the sums of the bond angles are 345, 348 and 350° for (I)–(III), respectively], whereas the nitro­gen atom N3 is flattened [the sums of the bond angles are 357.3, 356.2 and 356.8° for (I)–(III), respectively]. The furyl-vinyl substituents in (I)–(III) are practically planar and have an E configuration at the C9=C10 double bond. Inter­estingly, in (I) this bulky fragment occupies the axial position at the quaternary C2 carbon atom of the tetra­hydro­pyrimidine ring, whereas in (II) and (III) it is equatorially disposed. Apparently, this may be explained by the different directions of the three-component reactions.

The mol­ecules of (I)–(III) possess an asymmetric center at the C2 carbon atom. The crystals of (I)–(III) are racemates.

Supra­molecular features

In the crystal of (I), mol­ecules form infinite hydrogen-bonded chains propagating along [001] by strong inter­molecular N1—H1⋯O2i hydrogen bonds (Table 1 ▸, Fig. 5 ▸). Neighboring mol­ecules within the chains are rotated by 180° relative to each other. The chains are packed in stacks along the a-axis direction (Fig. 5 ▸).

Table 1

Hydrogen-bond geometry (Å, °) for (I)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O2i	0.92 (2)	1.92 (2)	2.817 (2)	164.4 (19)

Symmetry code: (i) .

Figure 5

Crystal structure of (I) illustrating the N—H⋯O hydrogen-bonded chains (dashed lines) propagating along [001].

In the crystals of (II) and (III), mol­ecules also form infinite hydrogen-bonded chains propagating along [100] by strong inter­molecular N1—H1⋯O2i (Table 2 ▸, Fig. 6 ▸) and N1—H1⋯O3i (Table 3 ▸, Fig. 7 ▸) hydrogen bonds, respectively, with neighboring mol­ecules rotated by 180° relative to each other. However, despite the fact that compounds (II) and (III) are isostructural, steric differences between the phenyl and furyl substituents result in chains with different geometries. Thus, in the crystal of (II) the chains have a zigzag-like structure (Fig. 6 ▸), whereas in the crystal of (III) they are almost linear (Fig. 7 ▸). In both (II) and (III), the hydrogen-bonded chains are further packed in stacks along the b-axis direction (Figs. 6 ▸ and 7 ▸).

Table 2

Hydrogen-bond geometry (Å, °) for (II)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O2i	0.90 (3)	2.07 (3)	2.971 (3)	174 (2)

Symmetry code: (i) .

Figure 6

Crystal structure of (II) illustrating the zigzag N—H⋯O hydrogen-bonded chains (dashed lines) propagating along [100].

Table 3

Hydrogen-bond geometry (Å, °) for (III)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O3i	0.92 (4)	2.04 (4)	2.949 (4)	169 (3)

Symmetry code: (i) .

Figure 7

Crystal structure of (III) illustrating the almost linear N—H⋯O hydrogen-bonded chains (dashed lines) propagating along [100].

Synthesis and crystallization

3-Aryl­methyl-2-[(E)-2-(furan-2-yl)vin­yl]-2,3-di­hydro­quin­azolin-4-ones (I)–(III) were synthesized using a method similar to the recently described procedure (Zaytsev et al., 2017 ▸).

General procedure. p-TsOH (0.79 g, 4.6 mmol) was added to a mixture of isatoic anhydride (1.5 g, 9.2 mmol), corres­ponding amine (11.0 mmol), and 3-(5-methylfuran-2-yl)- or (furan-2-yl)-2-methyl­acryl­aldehyde (9.2 mmol) in EtOH (50 mL) (Fig. 8 ▸). The reaction mixture was heated under reflux for 4 h. The progress of the reaction was monitored by TLC. When the reaction was complete, the mixture was diluted with H2O (100 mL) and extracted with EtOAc (3×50 mL). The organic layers were combined, dried (MgSO4), concentrated in vacuo and the residue was purified by column chromatography (3×20 cm) on SiO2 using hexane and then EtOAc/hexane (1/10→1/5) mixtures as eluent. The resulting product was recrystallized from a mixture hexa­ne–EtOAc to afford analytically pure samples of the target products.

Figure 8

Synthesis of (I)–(III) by the three-component reaction between isatoic anhydride, the corresponding amine and 3-(5-methylfuran-2-yl)- or (furan-2-yl)-2-methyl­acryl­aldehyde.

3-Benzyl-2-[( )-2-(5-methylfuran-2-yl)vin­yl]-2,3-di­hydro­quin­azolin-4(1 )-one (I). Colourless needles, yield 0.7 g (22%), m.p. 430.1–432.1 K. IR (KBr), ν (cm−1): 3272, 1632, 1611. 1H NMR (CDCl3, 400 MHz, 301 K): δ = 2.25 (s, 3H, CH3), 3.86 (d, 1H, CH2—N, J = 15.1), 4.34 (br s, 1H, NH), 4.97 (dd, 1H, H2, J = 3.2, J = 4.6), 5.63 (d, 1H, CH2—N, J = 15.1), 5.95 (dd, 1H, H4, furyl, J = 0.9, J = 3.2), 6.15–6.20 (m, 2H, –CH=CH–, H3, fur­yl), 6.59 (d, 1H, H8, J = 7.8), 6.87 (br t, 1H, H6, J = 7.8), 7.27–7.34 (m, 7H, HAr, –CH=CH–), 7.99 (dd, 1H, H5, J = 1.4, J = 7.8). 13C NMR (CDCl3, 150.9 MHz, 301 K): δ = 13.8 (CH3), 46.6 (CH2–N), 70.1 (C2), 107.8, 111.4, 114.8, 115.8, 119.3, 121.5, 121.8, 127.6, 128.1, 128.8, 128.9, 133.6, 137.1, 145.4, 149.6, 153.1 (CAr, –CH=CH–), 162.9 (NCO). MS (EI, 70 eV): m/z = 344 [M]+ (2), 251 (16), 209 (14), 104 (10), 91 (100), 77 (20), 65 (27), 43 (24).

3-Benzyl-2-[( )-2-(furan-2-yl)-1-methyl­vin­yl]-2,3-di­hydro­quinazolin-4(1 )-one (II). Colourless plates, yield 0.95 g (30%), m.p. 405.1–406.1 K. IR (KBr), ν (cm−1): 3294, 1630. 1H NMR (CDCl3, 400 MHz, 301 K): δ = 1.96 (s, 3H, CH3), 3.77 (d, 1H, CH2—N, J = 15.1), 4.36 (br s, 1H, NH), 5.12 (br s, 1H, H2), 5.63 (d, 1H, CH2—N, J = 15.1), 6.11 (s, 1H, –C=CH–), 6.31 (d, 1H, H3, furyl, J = 3.2), 6.41 (dd, 1H, H4, furyl, J = 1.8, J = 3.2), 6.51 (d, 1H, H8, J = 7.8), 6.78 (t, 1H, H6, J = 7.8), 7.21–7.31 (m, 6H, HAr), 7.41 (br d, 1H, H5, furyl, J = 1.8), 7.94 (dd, 1H, H5, J = 1.4, J = 7.8). 13C NMR (CDCl3, 150.9 MHz, 301 K): δ = 13.6 (CH3), 46.5 (CH2—N), 75.1 (C2), 111.0, 111.5, 113.6, 114.4, 117.4, 118.6, 127.6, 128.2, 128.7, 128.8, 133.6, 133.8, 136.9, 142.3, 145.7, 151.8 (CAr, –C=CH–), 163.0 (NCO). MS (EI, 70 eV): m/z = 344 [M]+ (4), 237 (55), 207 (14), 167 (5), 91 (100), 77 (19), 65 (11), 44 (8).

3-(2-Furylmeth­yl)-2-[( )-2-(furan-2-yl)-1-methyl­vin­yl]-2,3-di­hydro­quinazolin-4(1 )-one (III) Yellow plates, yield 0.83 g (27%), m.p. 380.1–381.1 K (hexa­ne–EtOAc). IR (KBr), ν (cm−1): 3308, 1632. 1H NMR (CDCl3, 400 MHz, 301 K): δ = 1.99 (s, 3H, CH3), 3.93 (d, 1H, CH2—N, J = 15.4), 4.22 (br s, 1H, NH), 5.32 (br s, 1H, H2), 5.39 (d, 1H, CH2—N, J = 15.4), 6.26 (s, 1H, –C=CH–), 6.28 (br d, 1H, H3, furyl, J = 3.3), 6.30 (dd, 1H, H4, furyl, J = 1.7, J = 3.3), 6.35 (br d, 1H, H3, furyl, J = 3.3), 6.42 (dd, 1H, H4, furyl, J = 1.7, J = 3.3), 6.51 (d, 1H, H8, J = 7.7), 6.78 (t, 1H, H6, J = 7.7), 7.23 (dt, 1H, H7, J = 1.1, J = 7.7), 7.34 (br d, 1H, H5, furyl, J = 1.7), 7.42 (br d, 1H, H5, furyl, J = 1.7), 7.92 (dd, 1H, H5, J = 1.1, J = 7.7). 13C NMR (CDCl3, 150.9 MHz, 301 K): δ = 13.4 (CH3), 39.7 (CH2—N), 75.8 (C2), 109.0, 110.5, 111.0, 111.5, 113.6, 114.4, 117.9, 118.6, 128.7, 133.4, 133.8, 142.3, 142.4, 145.7, 150.5, 151.8 (CAr, –C=CH–), 162.9 (NCO). MS (EI, 70 eV): m/z = 334 [M]+ (16), 227 (24), 224 (10), 81 (100), 77 (14), 53 (22).

Refinement

Crystal data, data collection and structure refinement details are summarized in Table 4 ▸. X-ray diffraction studies were carried out on the ‘Belok’ beamline of the National Research Center ‘Kurchatov Institute’ (Moscow, Russian Federation) using a Rayonix SX165 CCD detector. A total of 360 images for each compound was collected using an oscillation range of 1.0° (φ scan mode, two different crystal orientations) and corrected for absorption using the SCALA program (Evans, 2006 ▸). The data were indexed, integrated and scaled using the utility iMosflm in the CCP4 programme suite (Battye et al., 2011 ▸).

Table 4

Experimental details

	(I)	(II)	(III)
Crystal data
Chemical formula	C22H20N2O2	C22H20N2O2	C20H18N2O3
M r	344.40	344.40	334.36
Crystal system, space group	Monoclinic, P21/n	Orthorhombic, P b c a	Orthorhombic, P b c a
Temperature (K)	100	100	100
a, b, c (Å)	7.9416 (16), 19.202 (4), 12.497 (3)	13.921 (3), 11.296 (2), 22.623 (5)	13.928 (3), 10.684 (2), 22.368 (5)
α, β, γ (°)	90, 99.663 (3), 90	90, 90, 90	90, 90, 90
V (Å3)	1878.7 (7)	3557.5 (13)	3328.5 (12)
Z	4	8	8
Radiation type	Synchrotron, λ = 0.96990 Å	Synchrotron, λ = 0.96990 Å	Synchrotron, λ = 0.96990 Å
μ (mm−1)	0.16	0.17	0.19
Crystal size (mm)	0.25 × 0.08 × 0.03	0.20 × 0.15 × 0.01	0.30 × 0.30 × 0.07
Data collection
Diffractometer	Rayonix SX165 CCD	Rayonix SX165 CCD	Rayonix SX165 CCD
Absorption correction	Multi-scan (SCALA; Evans, 2006 ▸)	Multi-scan (SCALA; Evans, 2006 ▸)	Multi-scan (SCALA; Evans, 2006 ▸)
T min, T max	0.950, 0.990	0.960, 0.990	0.940, 0.980
No. of measured, independent and observed [I > 2σ(I)] reflections	20568, 3781, 2264	18942, 3764, 2411	27461, 3460, 2414
R int	0.080	0.070	0.097
(sin θ/λ)max (Å−1)	0.640	0.640	0.641
Refinement
R[F 2 > 2σ(F 2)], wR(F 2), S	0.097, 0.218, 1.00	0.074, 0.190, 1.05	0.089, 0.224, 1.05
No. of reflections	3781	3764	3460
No. of parameters	240	240	231
H-atom treatment	H atoms treated by a mixture of independent and constrained refinement	H atoms treated by a mixture of independent and constrained refinement	H atoms treated by a mixture of independent and constrained refinement
Δρmax, Δρmin (e Å−3)	0.37, −0.31	0.30, −0.28	0.42, −0.57

Computer programs: Marccd (Doyle, 2011 ▸), iMosflm (Battye et al., 2011 ▸), SHELXT (Sheldrick, 2015a ▸) and SHELXL (Sheldrick, 2015b ▸), SHELXTL (Sheldrick, 2008 ▸).

The hydrogen atoms of the amino groups were localized in difference-Fourier maps and refined isotropically with fixed displacement parameters [U iso(H) = 1.2U eq(N)]. The other hydrogen atoms were placed in calculated positions with C—H = 0.95–1.00 Å and refined in the riding model with fixed isotropic displacement parameters [U iso(H) = 1.5U eq(C-meth­yl) or 1.2U eq(C) for all others].

A relatively large number of reflections (a few dozen) were omitted for the following reasons: (1) In order to achieve better I/σ statistics for high-angle reflections, we selected a longer exposure time, which resulted in some intensity overloads in the low-angle part of the area. These corrupted intensities were excluded from final steps of the refinement. (2) In the current setup of the instrument, the low-temperature device eclipses a small region of the detector near its high-angle limit. This resulted in zero intensity for some reflections. (3) The quality of the single crystals chosen for the diffraction experiments was far from perfect. Some systematic intensity deviations can be due to extinction and defects present in the crystals.

Crystal structure: contains datablock(s) global, I, II, III. DOI: 10.1107/S2056989018009982/yk2115sup1.cif

Structure factors: contains datablock(s) I. DOI: 10.1107/S2056989018009982/yk2115Isup2.hkl

Structure factors: contains datablock(s) II. DOI: 10.1107/S2056989018009982/yk2115IIsup3.hkl

Structure factors: contains datablock(s) III. DOI: 10.1107/S2056989018009982/yk2115IIIsup4.hkl

CCDC references: 1855145, 1855144, 1855143

Additional supporting information: crystallographic information; 3D view; checkCIF report

C22H20N2O2	F(000) = 728
Mr = 344.40	Dx = 1.218 Mg m−3
Monoclinic, P21/n	Synchrotron radiation, λ = 0.96990 Å
a = 7.9416 (16) Å	Cell parameters from 500 reflections
b = 19.202 (4) Å	θ = 3.5–35.0°
c = 12.497 (3) Å	µ = 0.16 mm−1
β = 99.663 (3)°	T = 100 K
V = 1878.7 (7) Å3	Needle, colourless
Z = 4	0.25 × 0.08 × 0.03 mm

Rayonix SX165 CCD diffractometer	2264 reflections with I > 2σ(I)
/f scan	Rint = 0.080
Absorption correction: multi-scan (SCALA; Evans, 2006)	θmax = 38.4°, θmin = 3.7°
Tmin = 0.950, Tmax = 0.990	h = −8→9
20568 measured reflections	k = −24→24
3781 independent reflections	l = −15→15

Refinement on F2	Secondary atom site location: difference Fourier map
Least-squares matrix: full	Hydrogen site location: mixed
R[F2 > 2σ(F2)] = 0.097	H atoms treated by a mixture of independent and constrained refinement
wR(F2) = 0.218	w = 1/[σ2(Fo2)] where P = (Fo2 + 2Fc2)/3
S = 1.00	(Δ/σ)max < 0.001
3781 reflections	Δρmax = 0.37 e Å−3
240 parameters	Δρmin = −0.31 e Å−3
0 restraints	Extinction correction: SHELXL, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: difference Fourier map	Extinction coefficient: 0.085 (8)

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.

	x	y	z	Uiso*/Ueq
O1	0.28682 (18)	0.44379 (6)	0.47756 (11)	0.0354 (5)
O2	0.2968 (2)	0.25305 (7)	0.07159 (12)	0.0523 (5)
N1	0.6282 (3)	0.24206 (7)	0.35460 (14)	0.0350 (5)
H1	0.701 (3)	0.2458 (8)	0.4204 (18)	0.042*
C2	0.4453 (3)	0.24277 (9)	0.35967 (16)	0.0346 (6)
H2	0.4234	0.2060	0.4124	0.042*
N3	0.3532 (2)	0.22258 (8)	0.25120 (12)	0.0351 (5)
C4	0.3922 (3)	0.25582 (9)	0.16113 (18)	0.0378 (6)
C4A	0.5591 (3)	0.29244 (9)	0.17600 (15)	0.0347 (6)
C5	0.6075 (3)	0.33384 (9)	0.09282 (15)	0.0428 (7)
H5	0.5278	0.3418	0.0283	0.051*
C6	0.7685 (3)	0.36302 (10)	0.10347 (17)	0.0440 (7)
H6	0.7987	0.3912	0.0472	0.053*
C7	0.8863 (3)	0.35072 (9)	0.19744 (18)	0.0437 (6)
H7	0.9980	0.3698	0.2039	0.052*
C8	0.8432 (3)	0.31105 (9)	0.28204 (17)	0.0398 (6)
H8	0.9249	0.3032	0.3457	0.048*
C8A	0.6779 (3)	0.28254 (9)	0.27292 (15)	0.0348 (6)
C9	0.3811 (3)	0.31155 (9)	0.39732 (15)	0.0353 (6)
H9	0.3892	0.3518	0.3543	0.042*
C10	0.3141 (3)	0.31829 (10)	0.48751 (16)	0.0355 (6)
H10	0.3002	0.2769	0.5267	0.043*
C11	0.2603 (3)	0.38264 (9)	0.53159 (16)	0.0352 (6)
C12	0.1939 (3)	0.39832 (9)	0.62208 (16)	0.0415 (6)
H12	0.1636	0.3661	0.6733	0.050*
C13	0.1783 (3)	0.47279 (10)	0.62563 (16)	0.0417 (6)
H13	0.1359	0.4991	0.6798	0.050*
C14	0.2355 (3)	0.49853 (9)	0.53705 (17)	0.0355 (6)
C15	0.2558 (3)	0.56945 (8)	0.49272 (18)	0.0433 (6)
H15A	0.3767	0.5780	0.4903	0.065*
H15B	0.2143	0.6042	0.5395	0.065*
H15C	0.1897	0.5728	0.4193	0.065*
C16	0.1931 (3)	0.18476 (10)	0.24752 (16)	0.0416 (6)
H16A	0.1365	0.1808	0.1709	0.050*
H16B	0.1170	0.2122	0.2866	0.050*
C17	0.2130 (3)	0.11236 (10)	0.29657 (16)	0.0377 (6)
C18	0.0692 (3)	0.07756 (11)	0.31936 (18)	0.0490 (7)
H18	−0.0384	0.1003	0.3063	0.059*
C19	0.0799 (4)	0.00989 (12)	0.3611 (2)	0.0599 (8)
H19	−0.0201	−0.0134	0.3744	0.072*
C20	0.2384 (4)	−0.02327 (12)	0.38311 (18)	0.0601 (8)
H20	0.2472	−0.0691	0.4121	0.072*
C21	0.3821 (4)	0.01103 (10)	0.36237 (16)	0.0485 (7)
H21	0.4904	−0.0112	0.3779	0.058*
C22	0.3698 (3)	0.07805 (10)	0.31880 (16)	0.0410 (7)
H22	0.4697	0.1007	0.3040	0.049*

	U11	U22	U33	U12	U13	U23
O1	0.0423 (11)	0.0291 (8)	0.0371 (9)	−0.0006 (6)	0.0135 (7)	−0.0021 (5)
O2	0.0677 (14)	0.0512 (10)	0.0321 (10)	−0.0035 (8)	−0.0082 (9)	0.0004 (6)
N1	0.0476 (15)	0.0303 (10)	0.0265 (10)	0.0035 (8)	0.0042 (9)	0.0001 (7)
C2	0.0437 (17)	0.0324 (11)	0.0278 (12)	0.0006 (9)	0.0066 (11)	−0.0010 (8)
N3	0.0454 (14)	0.0274 (9)	0.0314 (10)	−0.0021 (8)	0.0028 (9)	−0.0021 (7)
C4	0.0564 (19)	0.0256 (10)	0.0298 (13)	0.0040 (10)	0.0024 (12)	−0.0020 (9)
C4A	0.0507 (17)	0.0254 (10)	0.0286 (12)	0.0041 (10)	0.0088 (11)	−0.0025 (8)
C5	0.069 (2)	0.0277 (11)	0.0327 (13)	0.0061 (12)	0.0115 (12)	−0.0006 (8)
C6	0.069 (2)	0.0262 (11)	0.0415 (14)	−0.0023 (12)	0.0215 (13)	0.0001 (9)
C7	0.0540 (18)	0.0276 (11)	0.0528 (15)	−0.0001 (10)	0.0192 (14)	−0.0041 (10)
C8	0.0499 (18)	0.0288 (11)	0.0418 (13)	0.0049 (10)	0.0110 (12)	−0.0034 (9)
C8A	0.0512 (17)	0.0240 (10)	0.0302 (12)	0.0036 (10)	0.0095 (11)	−0.0020 (8)
C9	0.0477 (16)	0.0259 (10)	0.0324 (12)	−0.0009 (9)	0.0069 (11)	−0.0011 (8)
C10	0.0397 (16)	0.0287 (11)	0.0382 (12)	−0.0031 (9)	0.0076 (11)	−0.0008 (8)
C11	0.0428 (16)	0.0291 (11)	0.0357 (12)	−0.0006 (10)	0.0125 (11)	0.0002 (8)
C12	0.0507 (17)	0.0327 (11)	0.0438 (14)	0.0032 (10)	0.0158 (12)	0.0045 (9)
C13	0.0508 (17)	0.0380 (12)	0.0396 (13)	0.0078 (11)	0.0168 (12)	−0.0041 (9)
C14	0.0389 (15)	0.0289 (11)	0.0382 (12)	0.0021 (9)	0.0048 (11)	−0.0066 (9)
C15	0.0516 (18)	0.0313 (12)	0.0471 (14)	0.0006 (10)	0.0084 (12)	−0.0017 (9)
C16	0.0421 (17)	0.0343 (12)	0.0463 (14)	0.0005 (11)	0.0016 (11)	−0.0091 (9)
C17	0.0490 (17)	0.0306 (11)	0.0336 (12)	−0.0009 (11)	0.0070 (11)	−0.0057 (9)
C18	0.0476 (18)	0.0475 (14)	0.0512 (15)	−0.0068 (12)	0.0063 (12)	−0.0027 (11)
C19	0.063 (2)	0.0498 (15)	0.0672 (18)	−0.0180 (14)	0.0125 (15)	0.0054 (11)
C20	0.088 (2)	0.0374 (13)	0.0567 (16)	−0.0095 (15)	0.0158 (15)	0.0045 (11)
C21	0.071 (2)	0.0307 (12)	0.0466 (14)	0.0065 (12)	0.0193 (13)	0.0005 (10)
C22	0.0602 (19)	0.0296 (11)	0.0371 (13)	0.0012 (11)	0.0192 (12)	−0.0031 (9)

O1—C14	1.388 (2)	C10—H10	0.9500
O1—C11	1.388 (2)	C11—C12	1.359 (3)
O2—C4	1.243 (2)	C12—C13	1.437 (3)
N1—C8A	1.392 (2)	C12—H12	0.9500
N1—C2	1.465 (3)	C13—C14	1.358 (3)
N1—H1	0.92 (2)	C13—H13	0.9500
C2—N3	1.480 (3)	C14—C15	1.489 (2)
C2—C9	1.518 (2)	C15—H15A	0.9800
C2—H2	1.0000	C15—H15B	0.9800
N3—C4	1.374 (2)	C15—H15C	0.9800
N3—C16	1.459 (3)	C16—C17	1.517 (3)
C4—C4A	1.485 (3)	C16—H16A	0.9900
C4A—C5	1.412 (2)	C16—H16B	0.9900
C4A—C8A	1.417 (3)	C17—C18	1.393 (3)
C5—C6	1.382 (3)	C17—C22	1.394 (3)
C5—H5	0.9500	C18—C19	1.397 (3)
C6—C7	1.393 (3)	C18—H18	0.9500
C6—H6	0.9500	C19—C20	1.396 (4)
C7—C8	1.392 (3)	C19—H19	0.9500
C7—H7	0.9500	C20—C21	1.380 (3)
C8—C8A	1.410 (3)	C20—H20	0.9500
C8—H8	0.9500	C21—C22	1.394 (2)
C9—C10	1.331 (2)	C21—H21	0.9500
C9—H9	0.9500	C22—H22	0.9500
C10—C11	1.446 (2)
C14—O1—C11	107.34 (15)	C12—C11—C10	133.37 (18)
C8A—N1—C2	115.58 (17)	O1—C11—C10	117.32 (17)
C8A—N1—H1	113.4 (12)	C11—C12—C13	107.09 (16)
C2—N1—H1	116.0 (13)	C11—C12—H12	126.5
N1—C2—N3	107.40 (15)	C13—C12—H12	126.5
N1—C2—C9	114.10 (15)	C14—C13—C12	107.13 (15)
N3—C2—C9	111.83 (16)	C14—C13—H13	126.4
N1—C2—H2	107.8	C12—C13—H13	126.4
N3—C2—H2	107.8	C13—C14—O1	109.23 (15)
C9—C2—H2	107.8	C13—C14—C15	135.07 (18)
C4—N3—C16	121.37 (18)	O1—C14—C15	115.69 (17)
C4—N3—C2	118.97 (17)	C14—C15—H15A	109.5
C16—N3—C2	116.97 (15)	C14—C15—H15B	109.5
O2—C4—N3	122.1 (2)	H15A—C15—H15B	109.5
O2—C4—C4A	121.97 (19)	C14—C15—H15C	109.5
N3—C4—C4A	115.89 (19)	H15A—C15—H15C	109.5
C5—C4A—C8A	118.7 (2)	H15B—C15—H15C	109.5
C5—C4A—C4	121.5 (2)	N3—C16—C17	114.34 (19)
C8A—C4A—C4	119.71 (18)	N3—C16—H16A	108.7
C6—C5—C4A	121.3 (2)	C17—C16—H16A	108.7
C6—C5—H5	119.4	N3—C16—H16B	108.7
C4A—C5—H5	119.4	C17—C16—H16B	108.7
C5—C6—C7	119.46 (18)	H16A—C16—H16B	107.6
C5—C6—H6	120.3	C18—C17—C22	117.9 (2)
C7—C6—H6	120.3	C18—C17—C16	119.2 (2)
C8—C7—C6	121.1 (2)	C22—C17—C16	122.9 (2)
C8—C7—H7	119.4	C17—C18—C19	121.5 (2)
C6—C7—H7	119.4	C17—C18—H18	119.3
C7—C8—C8A	119.7 (2)	C19—C18—H18	119.3
C7—C8—H8	120.1	C20—C19—C18	119.6 (2)
C8A—C8—H8	120.1	C20—C19—H19	120.2
N1—C8A—C8	122.2 (2)	C18—C19—H19	120.2
N1—C8A—C4A	118.1 (2)	C21—C20—C19	119.5 (2)
C8—C8A—C4A	119.62 (18)	C21—C20—H20	120.3
C10—C9—C2	123.34 (17)	C19—C20—H20	120.3
C10—C9—H9	118.3	C20—C21—C22	120.5 (2)
C2—C9—H9	118.3	C20—C21—H21	119.7
C9—C10—C11	126.24 (18)	C22—C21—H21	119.7
C9—C10—H10	116.9	C21—C22—C17	121.1 (2)
C11—C10—H10	116.9	C21—C22—H22	119.5
C12—C11—O1	109.20 (16)	C17—C22—H22	119.5
C8A—N1—C2—N3	54.70 (19)	N1—C2—C9—C10	−117.6 (2)
C8A—N1—C2—C9	−69.8 (2)	N3—C2—C9—C10	120.2 (2)
N1—C2—N3—C4	−49.9 (2)	C2—C9—C10—C11	175.94 (19)
C9—C2—N3—C4	76.0 (2)	C14—O1—C11—C12	0.2 (2)
N1—C2—N3—C16	148.38 (16)	C14—O1—C11—C10	−176.56 (17)
C9—C2—N3—C16	−85.71 (19)	C9—C10—C11—C12	−178.5 (2)
C16—N3—C4—O2	−2.9 (3)	C9—C10—C11—O1	−2.7 (3)
C2—N3—C4—O2	−163.75 (17)	O1—C11—C12—C13	−0.2 (2)
C16—N3—C4—C4A	179.93 (16)	C10—C11—C12—C13	175.8 (2)
C2—N3—C4—C4A	19.1 (2)	C11—C12—C13—C14	0.1 (2)
O2—C4—C4A—C5	8.7 (3)	C12—C13—C14—O1	0.0 (2)
N3—C4—C4A—C5	−174.14 (15)	C12—C13—C14—C15	−179.3 (3)
O2—C4—C4A—C8A	−167.33 (16)	C11—O1—C14—C13	−0.1 (2)
N3—C4—C4A—C8A	9.8 (3)	C11—O1—C14—C15	179.34 (18)
C8A—C4A—C5—C6	1.6 (3)	C4—N3—C16—C17	131.92 (18)
C4—C4A—C5—C6	−174.45 (18)	C2—N3—C16—C17	−66.9 (2)
C4A—C5—C6—C7	0.8 (3)	N3—C16—C17—C18	165.99 (17)
C5—C6—C7—C8	−1.7 (3)	N3—C16—C17—C22	−15.0 (3)
C6—C7—C8—C8A	0.1 (3)	C22—C17—C18—C19	−1.3 (3)
C2—N1—C8A—C8	152.99 (17)	C16—C17—C18—C19	177.8 (2)
C2—N1—C8A—C4A	−29.7 (2)	C17—C18—C19—C20	1.6 (3)
C7—C8—C8A—N1	179.53 (15)	C18—C19—C20—C21	−0.6 (4)
C7—C8—C8A—C4A	2.3 (3)	C19—C20—C21—C22	−0.6 (3)
C5—C4A—C8A—N1	179.53 (15)	C20—C21—C22—C17	0.9 (3)
C4—C4A—C8A—N1	−4.3 (3)	C18—C17—C22—C21	0.1 (3)
C5—C4A—C8A—C8	−3.1 (3)	C16—C17—C22—C21	−178.98 (17)
C4—C4A—C8A—C8	172.99 (15)

D—H···A	D—H	H···A	D···A	D—H···A
N1—H1···O2i	0.92 (2)	1.92 (2)	2.817 (2)	164.4 (19)

C22H20N2O2	Dx = 1.286 Mg m−3
Mr = 344.40	Synchrotron radiation, λ = 0.96990 Å
Orthorhombic, Pbca	Cell parameters from 500 reflections
a = 13.921 (3) Å	θ = 3.2–32.0°
b = 11.296 (2) Å	µ = 0.17 mm−1
c = 22.623 (5) Å	T = 100 K
V = 3557.5 (13) Å3	Plate, colourless
Z = 8	0.20 × 0.15 × 0.01 mm
F(000) = 1456

Rayonix SX165 CCD diffractometer	2411 reflections with I > 2σ(I)
/f scan	Rint = 0.070
Absorption correction: multi-scan (SCALA; Evans, 2006)	θmax = 38.4°, θmin = 3.2°
Tmin = 0.960, Tmax = 0.990	h = −17→17
18942 measured reflections	k = −14→14
3764 independent reflections	l = −28→28

Refinement on F2	Secondary atom site location: difmap2
Least-squares matrix: full	Hydrogen site location: mixed
R[F2 > 2σ(F2)] = 0.074	H atoms treated by a mixture of independent and constrained refinement
wR(F2) = 0.190	w = 1/[σ2(Fo2) + 2P] where P = (Fo2 + 2Fc2)/3
S = 1.05	(Δ/σ)max < 0.001
3764 reflections	Δρmax = 0.30 e Å−3
240 parameters	Δρmin = −0.28 e Å−3
0 restraints	Extinction correction: SHELXL, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: difference Fourier map	Extinction coefficient: 0.0102 (10)

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.

	x	y	z	Uiso*/Ueq
O1	0.54343 (13)	0.33368 (16)	0.38217 (8)	0.0430 (5)
O2	0.13105 (12)	0.75727 (16)	0.49206 (8)	0.0405 (5)
N1	0.42208 (15)	0.77868 (19)	0.48819 (9)	0.0339 (5)
H1	0.486 (2)	0.772 (2)	0.4927 (11)	0.041*
C2	0.37955 (17)	0.6658 (2)	0.47071 (11)	0.0328 (6)
H2	0.3889	0.6072	0.5033	0.039*
N3	0.27451 (14)	0.68234 (18)	0.46041 (9)	0.0326 (5)
C4	0.21959 (18)	0.7574 (2)	0.49452 (11)	0.0329 (6)
C4A	0.27357 (17)	0.8430 (2)	0.53208 (11)	0.0329 (6)
C5	0.22296 (18)	0.9208 (2)	0.56907 (11)	0.0364 (6)
H5	0.1552	0.9134	0.5727	0.044*
C6	0.27111 (19)	1.0090 (2)	0.60050 (11)	0.0395 (7)
H6	0.2366	1.0619	0.6252	0.047*
C7	0.3704 (2)	1.0183 (2)	0.59511 (11)	0.0392 (6)
H7	0.4035	1.0785	0.6162	0.047*
C8	0.42221 (18)	0.9407 (2)	0.55936 (11)	0.0365 (6)
H8	0.4901	0.9476	0.5566	0.044*
C8A	0.37381 (17)	0.8521 (2)	0.52727 (10)	0.0317 (6)
C9	0.43039 (16)	0.6209 (2)	0.41535 (11)	0.0319 (6)
C10	0.46061 (16)	0.5072 (2)	0.41468 (11)	0.0334 (6)
H10	0.4491	0.4625	0.4495	0.040*
C11	0.50873 (17)	0.4455 (2)	0.36658 (11)	0.0354 (6)
C12	0.52915 (19)	0.4665 (2)	0.30866 (12)	0.0421 (7)
H12	0.5136	0.5356	0.2867	0.051*
C13	0.5792 (2)	0.3627 (3)	0.28702 (12)	0.0441 (7)
H13	0.6028	0.3503	0.2481	0.053*
C14	0.5856 (2)	0.2871 (3)	0.33296 (13)	0.0461 (7)
H14	0.6156	0.2116	0.3313	0.055*
C15	0.4437 (2)	0.7071 (2)	0.36493 (11)	0.0405 (7)
H15A	0.5122	0.7138	0.3555	0.061*
H15B	0.4188	0.7849	0.3765	0.061*
H15C	0.4087	0.6786	0.3301	0.061*
C16	0.22429 (17)	0.5853 (2)	0.42882 (11)	0.0356 (6)
H16A	0.1591	0.5760	0.4456	0.043*
H16B	0.2595	0.5104	0.4354	0.043*
C17	0.21601 (17)	0.6074 (2)	0.36272 (11)	0.0337 (6)
C18	0.16896 (19)	0.7080 (2)	0.34142 (12)	0.0387 (6)
H18	0.1399	0.7615	0.3684	0.046*
C19	0.1643 (2)	0.7306 (2)	0.28113 (12)	0.0406 (7)
H19	0.1317	0.7992	0.2673	0.049*
C20	0.2067 (2)	0.6539 (3)	0.24086 (12)	0.0428 (7)
H20	0.2048	0.6708	0.1997	0.051*
C21	0.2521 (2)	0.5522 (3)	0.26139 (13)	0.0461 (7)
H21	0.2803	0.4983	0.2343	0.055*
C22	0.25596 (19)	0.5296 (2)	0.32196 (12)	0.0421 (7)
H22	0.2865	0.4596	0.3356	0.051*

	U11	U22	U33	U12	U13	U23
O1	0.0384 (11)	0.0384 (11)	0.0522 (12)	0.0046 (8)	0.0039 (9)	−0.0038 (9)
O2	0.0210 (9)	0.0485 (11)	0.0520 (12)	0.0021 (8)	0.0008 (8)	0.0008 (9)
N1	0.0192 (10)	0.0379 (13)	0.0445 (13)	0.0006 (9)	0.0006 (9)	−0.0058 (10)
C2	0.0225 (12)	0.0362 (14)	0.0397 (14)	−0.0014 (10)	−0.0003 (10)	0.0011 (11)
N3	0.0210 (10)	0.0353 (12)	0.0415 (12)	−0.0007 (8)	0.0012 (9)	−0.0012 (10)
C4	0.0243 (12)	0.0374 (14)	0.0370 (14)	0.0021 (10)	0.0016 (10)	0.0050 (11)
C4A	0.0250 (13)	0.0368 (14)	0.0369 (14)	0.0040 (10)	0.0014 (10)	0.0034 (11)
C5	0.0284 (13)	0.0405 (15)	0.0404 (14)	0.0057 (11)	0.0025 (11)	0.0034 (12)
C6	0.0384 (15)	0.0401 (15)	0.0400 (15)	0.0085 (12)	0.0013 (12)	0.0007 (12)
C7	0.0397 (15)	0.0359 (14)	0.0421 (15)	0.0002 (11)	−0.0026 (12)	−0.0011 (12)
C8	0.0274 (12)	0.0369 (14)	0.0452 (15)	−0.0001 (11)	−0.0006 (11)	−0.0018 (12)
C8A	0.0277 (13)	0.0332 (13)	0.0341 (14)	0.0024 (10)	0.0013 (10)	0.0025 (11)
C9	0.0217 (11)	0.0358 (14)	0.0383 (14)	−0.0013 (10)	0.0011 (10)	0.0000 (11)
C10	0.0222 (11)	0.0396 (15)	0.0383 (14)	−0.0004 (10)	0.0004 (10)	−0.0024 (12)
C11	0.0252 (12)	0.0343 (14)	0.0466 (15)	0.0003 (10)	−0.0023 (11)	−0.0021 (12)
C12	0.0397 (15)	0.0427 (16)	0.0439 (16)	−0.0075 (12)	−0.0004 (13)	−0.0037 (13)
C13	0.0394 (16)	0.0513 (18)	0.0415 (16)	−0.0040 (13)	0.0065 (12)	−0.0111 (14)
C14	0.0383 (15)	0.0447 (17)	0.0554 (18)	0.0001 (13)	0.0061 (13)	−0.0124 (15)
C15	0.0373 (15)	0.0397 (16)	0.0446 (16)	−0.0034 (12)	0.0027 (12)	−0.0015 (12)
C16	0.0233 (12)	0.0335 (14)	0.0500 (16)	−0.0038 (10)	−0.0020 (11)	−0.0011 (12)
C17	0.0217 (11)	0.0326 (13)	0.0467 (15)	−0.0025 (10)	−0.0028 (10)	−0.0032 (12)
C18	0.0339 (14)	0.0350 (14)	0.0471 (16)	0.0030 (11)	0.0001 (12)	−0.0014 (12)
C19	0.0380 (15)	0.0338 (14)	0.0499 (17)	0.0027 (11)	−0.0050 (13)	−0.0001 (12)
C20	0.0343 (15)	0.0474 (17)	0.0467 (16)	−0.0043 (12)	−0.0052 (12)	−0.0032 (13)
C21	0.0382 (16)	0.0508 (17)	0.0493 (18)	0.0058 (13)	−0.0048 (13)	−0.0154 (14)
C22	0.0365 (14)	0.0375 (15)	0.0524 (18)	0.0043 (12)	−0.0118 (12)	−0.0084 (13)

O1—C14	1.364 (3)	C10—H10	0.9500
O1—C11	1.398 (3)	C11—C12	1.362 (4)
O2—C4	1.234 (3)	C12—C13	1.449 (4)
N1—C8A	1.386 (3)	C12—H12	0.9500
N1—C2	1.460 (3)	C13—C14	1.348 (4)
N1—H1	0.90 (3)	C13—H13	0.9500
C2—N3	1.493 (3)	C14—H14	0.9500
C2—C9	1.525 (3)	C15—H15A	0.9800
C2—H2	1.0000	C15—H15B	0.9800
N3—C4	1.378 (3)	C15—H15C	0.9800
N3—C16	1.483 (3)	C16—C17	1.520 (4)
C4—C4A	1.490 (4)	C16—H16A	0.9900
C4A—C8A	1.403 (3)	C16—H16B	0.9900
C4A—C5	1.404 (3)	C17—C22	1.390 (4)
C5—C6	1.395 (4)	C17—C18	1.398 (4)
C5—H5	0.9500	C18—C19	1.389 (4)
C6—C7	1.392 (4)	C18—H18	0.9500
C6—H6	0.9500	C19—C20	1.389 (4)
C7—C8	1.393 (4)	C19—H19	0.9500
C7—H7	0.9500	C20—C21	1.391 (4)
C8—C8A	1.408 (3)	C20—H20	0.9500
C8—H8	0.9500	C21—C22	1.395 (4)
C9—C10	1.351 (3)	C21—H21	0.9500
C9—C15	1.511 (4)	C22—H22	0.9500
C10—C11	1.455 (3)
C14—O1—C11	107.0 (2)	C12—C11—C10	137.1 (2)
C8A—N1—C2	119.9 (2)	O1—C11—C10	113.8 (2)
C8A—N1—H1	117.1 (16)	C11—C12—C13	106.5 (2)
C2—N1—H1	111.2 (17)	C11—C12—H12	126.7
N1—C2—N3	109.3 (2)	C13—C12—H12	126.7
N1—C2—C9	108.9 (2)	C14—C13—C12	106.5 (2)
N3—C2—C9	111.59 (19)	C14—C13—H13	126.7
N1—C2—H2	109.0	C12—C13—H13	126.7
N3—C2—H2	109.0	C13—C14—O1	110.9 (3)
C9—C2—H2	109.0	C13—C14—H14	124.6
C4—N3—C16	117.6 (2)	O1—C14—H14	124.6
C4—N3—C2	122.2 (2)	C9—C15—H15A	109.5
C16—N3—C2	116.39 (19)	C9—C15—H15B	109.5
O2—C4—N3	121.9 (2)	H15A—C15—H15B	109.5
O2—C4—C4A	122.0 (2)	C9—C15—H15C	109.5
N3—C4—C4A	116.0 (2)	H15A—C15—H15C	109.5
C8A—C4A—C5	119.9 (2)	H15B—C15—H15C	109.5
C8A—C4A—C4	120.3 (2)	N3—C16—C17	112.9 (2)
C5—C4A—C4	119.5 (2)	N3—C16—H16A	109.0
C6—C5—C4A	120.7 (2)	C17—C16—H16A	109.0
C6—C5—H5	119.7	N3—C16—H16B	109.0
C4A—C5—H5	119.7	C17—C16—H16B	109.0
C7—C6—C5	119.1 (2)	H16A—C16—H16B	107.8
C7—C6—H6	120.4	C22—C17—C18	118.2 (2)
C5—C6—H6	120.4	C22—C17—C16	121.2 (2)
C6—C7—C8	121.2 (2)	C18—C17—C16	120.5 (2)
C6—C7—H7	119.4	C19—C18—C17	120.6 (2)
C8—C7—H7	119.4	C19—C18—H18	119.7
C7—C8—C8A	119.9 (2)	C17—C18—H18	119.7
C7—C8—H8	120.1	C18—C19—C20	120.6 (3)
C8A—C8—H8	120.1	C18—C19—H19	119.7
N1—C8A—C4A	119.2 (2)	C20—C19—H19	119.7
N1—C8A—C8	121.5 (2)	C19—C20—C21	119.3 (3)
C4A—C8A—C8	119.2 (2)	C19—C20—H20	120.4
C10—C9—C15	124.5 (2)	C21—C20—H20	120.4
C10—C9—C2	118.0 (2)	C20—C21—C22	119.8 (3)
C15—C9—C2	117.5 (2)	C20—C21—H21	120.1
C9—C10—C11	127.3 (2)	C22—C21—H21	120.1
C9—C10—H10	116.3	C17—C22—C21	121.4 (3)
C11—C10—H10	116.3	C17—C22—H22	119.3
C12—C11—O1	109.1 (2)	C21—C22—H22	119.3
C8A—N1—C2—N3	41.3 (3)	N1—C2—C9—C10	131.6 (2)
C8A—N1—C2—C9	163.4 (2)	N3—C2—C9—C10	−107.7 (2)
N1—C2—N3—C4	−36.7 (3)	N1—C2—C9—C15	−48.3 (3)
C9—C2—N3—C4	−157.3 (2)	N3—C2—C9—C15	72.5 (3)
N1—C2—N3—C16	165.83 (19)	C15—C9—C10—C11	−1.3 (4)
C9—C2—N3—C16	45.3 (3)	C2—C9—C10—C11	178.8 (2)
C16—N3—C4—O2	−11.4 (3)	C14—O1—C11—C12	0.3 (3)
C2—N3—C4—O2	−168.5 (2)	C14—O1—C11—C10	179.6 (2)
C16—N3—C4—C4A	171.8 (2)	C9—C10—C11—C12	−9.7 (5)
C2—N3—C4—C4A	14.6 (3)	C9—C10—C11—O1	171.3 (2)
O2—C4—C4A—C8A	−170.6 (2)	O1—C11—C12—C13	−0.1 (3)
N3—C4—C4A—C8A	6.2 (3)	C10—C11—C12—C13	−179.2 (3)
O2—C4—C4A—C5	4.5 (4)	C11—C12—C13—C14	−0.1 (3)
N3—C4—C4A—C5	−178.7 (2)	C12—C13—C14—O1	0.3 (3)
C8A—C4A—C5—C6	1.1 (4)	C11—O1—C14—C13	−0.4 (3)
C4—C4A—C5—C6	−174.0 (2)	C4—N3—C16—C17	106.2 (2)
C4A—C5—C6—C7	−0.5 (4)	C2—N3—C16—C17	−95.3 (2)
C5—C6—C7—C8	−0.5 (4)	N3—C16—C17—C22	120.2 (3)
C6—C7—C8—C8A	0.9 (4)	N3—C16—C17—C18	−58.8 (3)
C2—N1—C8A—C4A	−24.3 (3)	C22—C17—C18—C19	−1.4 (4)
C2—N1—C8A—C8	159.8 (2)	C16—C17—C18—C19	177.7 (2)
C5—C4A—C8A—N1	−176.6 (2)	C17—C18—C19—C20	−0.4 (4)
C4—C4A—C8A—N1	−1.5 (4)	C18—C19—C20—C21	1.6 (4)
C5—C4A—C8A—C8	−0.7 (4)	C19—C20—C21—C22	−1.2 (4)
C4—C4A—C8A—C8	174.4 (2)	C18—C17—C22—C21	1.8 (4)
C7—C8—C8A—N1	175.5 (2)	C16—C17—C22—C21	−177.2 (2)
C7—C8—C8A—C4A	−0.3 (4)	C20—C21—C22—C17	−0.6 (4)

D—H···A	D—H	H···A	D···A	D—H···A
N1—H1···O2i	0.90 (3)	2.07 (3)	2.971 (3)	174 (2)

C20H18N2O3	Dx = 1.334 Mg m−3
Mr = 334.36	Synchrotron radiation, λ = 0.96990 Å
Orthorhombic, Pbca	Cell parameters from 600 reflections
a = 13.928 (3) Å	θ = 3.2–32.0°
b = 10.684 (2) Å	µ = 0.19 mm−1
c = 22.368 (5) Å	T = 100 K
V = 3328.5 (12) Å3	Plate, yellow
Z = 8	0.30 × 0.30 × 0.07 mm
F(000) = 1408

Rayonix SX165 CCD diffractometer	2414 reflections with I > 2σ(I)
/f scan	Rint = 0.097
Absorption correction: multi-scan (SCALA; Evans, 2006)	θmax = 38.4°, θmin = 3.2°
Tmin = 0.940, Tmax = 0.980	h = −17→17
27461 measured reflections	k = −13→13
3460 independent reflections	l = −26→26

Refinement on F2	Secondary atom site location: difference Fourier map
Least-squares matrix: full	Hydrogen site location: mixed
R[F2 > 2σ(F2)] = 0.089	H atoms treated by a mixture of independent and constrained refinement
wR(F2) = 0.224	w = 1/[σ2(Fo2) + (0.05P)2 + 6P] where P = (Fo2 + 2Fc2)/3
S = 1.05	(Δ/σ)max < 0.001
3460 reflections	Δρmax = 0.42 e Å−3
231 parameters	Δρmin = −0.57 e Å−3
0 restraints	Extinction correction: SHELXL, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: difference Fourier map	Extinction coefficient: 0.0078 (7)

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.

	x	y	z	Uiso*/Ueq
O1	0.53713 (18)	0.6665 (2)	0.63004 (12)	0.0493 (7)
O2	0.1753 (2)	0.2666 (3)	0.64505 (16)	0.0672 (9)
O3	0.12657 (16)	0.2418 (3)	0.49520 (14)	0.0646 (9)
N1	0.41678 (19)	0.2216 (3)	0.50272 (13)	0.0392 (7)
H1	0.483 (3)	0.224 (3)	0.5002 (16)	0.047*
C2	0.3738 (2)	0.3381 (3)	0.52287 (15)	0.0390 (8)
H2	0.3852	0.4045	0.4922	0.047*
N3	0.26847 (17)	0.3192 (3)	0.53043 (13)	0.0432 (8)
C4	0.2161 (2)	0.2432 (4)	0.49362 (18)	0.0475 (10)
C4A	0.2709 (2)	0.1577 (3)	0.45443 (16)	0.0434 (9)
C5	0.2225 (3)	0.0789 (4)	0.41411 (19)	0.0551 (11)
H5	0.1550	0.0868	0.4093	0.066*
C6	0.2718 (3)	−0.0095 (4)	0.3815 (2)	0.0597 (12)
H6	0.2387	−0.0630	0.3546	0.072*
C7	0.3707 (3)	−0.0196 (4)	0.38855 (19)	0.0537 (10)
H7	0.4049	−0.0808	0.3663	0.064*
C8	0.4203 (3)	0.0584 (3)	0.42746 (17)	0.0461 (9)
H8	0.4879	0.0506	0.4314	0.055*
C8A	0.3708 (2)	0.1484 (3)	0.46093 (15)	0.0390 (8)
C9	0.4206 (2)	0.3773 (3)	0.58156 (15)	0.0346 (7)
C10	0.4528 (2)	0.4952 (3)	0.58733 (15)	0.0357 (7)
H10	0.4455	0.5483	0.5536	0.043*
C11	0.4974 (2)	0.5494 (3)	0.63964 (15)	0.0374 (8)
C12	0.5116 (3)	0.5158 (3)	0.69790 (16)	0.0477 (9)
H12	0.4917	0.4401	0.7164	0.057*
C13	0.5625 (3)	0.6176 (4)	0.72574 (19)	0.0569 (11)
H13	0.5826	0.6224	0.7663	0.068*
C14	0.5760 (3)	0.7043 (4)	0.68329 (19)	0.0533 (10)
H14	0.6083	0.7816	0.6893	0.064*
C15	0.4279 (2)	0.2790 (3)	0.62950 (16)	0.0388 (8)
H15A	0.4948	0.2721	0.6428	0.058*
H15B	0.4065	0.1983	0.6135	0.058*
H15C	0.3873	0.3026	0.6635	0.058*
C16	0.2168 (2)	0.4154 (4)	0.56476 (18)	0.0523 (10)
H16A	0.1519	0.4261	0.5476	0.063*
H16B	0.2512	0.4961	0.5607	0.063*
C17	0.2076 (2)	0.3842 (3)	0.62962 (17)	0.0402 (8)
C18	0.2340 (3)	0.4544 (3)	0.67787 (16)	0.0546 (11)
H18	0.2623	0.5353	0.6783	0.066*
C19	0.2087 (4)	0.3767 (5)	0.7279 (2)	0.0819 (17)
H19	0.2137	0.4003	0.7687	0.098*
C20	0.1777 (3)	0.2682 (5)	0.7084 (3)	0.0787 (17)
H20	0.1593	0.2003	0.7333	0.094*

	U11	U22	U33	U12	U13	U23
O1	0.0430 (14)	0.0457 (14)	0.0591 (17)	−0.0026 (11)	0.0040 (12)	0.0069 (12)
O2	0.0530 (17)	0.0562 (17)	0.092 (2)	−0.0120 (13)	0.0018 (16)	0.0252 (16)
O3	0.0191 (12)	0.0779 (19)	0.097 (2)	−0.0025 (11)	−0.0024 (13)	0.0442 (16)
N1	0.0194 (13)	0.0550 (18)	0.0431 (17)	0.0007 (12)	−0.0018 (11)	−0.0013 (13)
C2	0.0246 (16)	0.053 (2)	0.0396 (19)	0.0017 (14)	0.0008 (13)	0.0122 (15)
N3	0.0180 (13)	0.0623 (18)	0.0494 (18)	0.0049 (12)	0.0032 (12)	0.0202 (15)
C4	0.0201 (15)	0.064 (2)	0.059 (2)	−0.0056 (15)	−0.0048 (15)	0.0344 (19)
C4A	0.0258 (16)	0.055 (2)	0.050 (2)	−0.0099 (15)	−0.0069 (15)	0.0240 (17)
C5	0.040 (2)	0.056 (2)	0.069 (3)	−0.0214 (18)	−0.0226 (19)	0.033 (2)
C6	0.055 (2)	0.047 (2)	0.077 (3)	−0.0234 (19)	−0.027 (2)	0.019 (2)
C7	0.051 (2)	0.046 (2)	0.064 (3)	−0.0138 (17)	−0.0180 (19)	0.0059 (18)
C8	0.0353 (18)	0.049 (2)	0.053 (2)	−0.0092 (15)	−0.0078 (16)	0.0025 (17)
C8A	0.0268 (16)	0.0492 (19)	0.0411 (19)	−0.0095 (14)	−0.0055 (14)	0.0128 (15)
C9	0.0256 (15)	0.0421 (17)	0.0362 (18)	0.0072 (13)	0.0037 (12)	0.0089 (14)
C10	0.0281 (16)	0.0392 (17)	0.0398 (18)	0.0057 (13)	0.0058 (13)	0.0060 (14)
C11	0.0331 (17)	0.0330 (15)	0.046 (2)	0.0089 (13)	0.0101 (14)	0.0050 (14)
C12	0.064 (2)	0.0369 (18)	0.042 (2)	0.0108 (17)	0.0086 (18)	−0.0027 (15)
C13	0.076 (3)	0.047 (2)	0.048 (2)	0.015 (2)	0.005 (2)	−0.0113 (18)
C14	0.051 (2)	0.047 (2)	0.063 (3)	0.0034 (17)	0.0029 (19)	−0.0081 (19)
C15	0.0380 (18)	0.0364 (17)	0.042 (2)	0.0068 (13)	0.0013 (15)	0.0079 (14)
C16	0.0288 (17)	0.058 (2)	0.070 (3)	0.0146 (16)	0.0111 (17)	0.028 (2)
C17	0.0269 (15)	0.0302 (16)	0.064 (2)	0.0049 (12)	0.0127 (15)	0.0106 (15)
C18	0.098 (3)	0.0220 (15)	0.044 (2)	0.0102 (18)	0.025 (2)	−0.0029 (15)
C19	0.127 (5)	0.070 (3)	0.049 (3)	0.047 (3)	0.032 (3)	0.002 (2)
C20	0.068 (3)	0.067 (3)	0.102 (4)	0.020 (2)	0.046 (3)	0.043 (3)

O1—C14	1.369 (5)	C8—H8	0.9500
O1—C11	1.386 (4)	C9—C10	1.342 (5)
O2—C17	1.378 (4)	C9—C15	1.504 (4)
O2—C20	1.418 (6)	C10—C11	1.446 (5)
O3—C4	1.247 (4)	C10—H10	0.9500
N1—C8A	1.377 (4)	C11—C12	1.366 (5)
N1—C2	1.453 (4)	C12—C13	1.441 (6)
N1—H1	0.92 (4)	C12—H12	0.9500
C2—N3	1.491 (4)	C13—C14	1.339 (6)
C2—C9	1.524 (5)	C13—H13	0.9500
C2—H2	1.0000	C14—H14	0.9500
N3—C4	1.367 (5)	C15—H15A	0.9800
N3—C16	1.471 (5)	C15—H15B	0.9800
C4—C4A	1.478 (6)	C15—H15C	0.9800
C4A—C8A	1.402 (4)	C16—C17	1.494 (5)
C4A—C5	1.406 (5)	C16—H16A	0.9900
C5—C6	1.376 (6)	C16—H16B	0.9900
C5—H5	0.9500	C17—C18	1.365 (5)
C6—C7	1.390 (6)	C18—C19	1.437 (6)
C6—H6	0.9500	C18—H18	0.9500
C7—C8	1.389 (5)	C19—C20	1.311 (7)
C7—H7	0.9500	C19—H19	0.9500
C8—C8A	1.400 (5)	C20—H20	0.9500
C14—O1—C11	106.8 (3)	C9—C10—H10	116.7
C17—O2—C20	103.4 (3)	C11—C10—H10	116.7
C8A—N1—C2	120.4 (3)	C12—C11—O1	109.1 (3)
C8A—N1—H1	116 (2)	C12—C11—C10	136.8 (3)
C2—N1—H1	114 (2)	O1—C11—C10	114.1 (3)
N1—C2—N3	108.9 (3)	C11—C12—C13	106.6 (3)
N1—C2—C9	109.1 (3)	C11—C12—H12	126.7
N3—C2—C9	111.1 (3)	C13—C12—H12	126.7
N1—C2—H2	109.2	C14—C13—C12	106.5 (4)
N3—C2—H2	109.2	C14—C13—H13	126.7
C9—C2—H2	109.2	C12—C13—H13	126.7
C4—N3—C16	117.9 (3)	C13—C14—O1	111.0 (4)
C4—N3—C2	122.5 (3)	C13—C14—H14	124.5
C16—N3—C2	116.4 (3)	O1—C14—H14	124.5
O3—C4—N3	121.6 (4)	C9—C15—H15A	109.5
O3—C4—C4A	121.7 (4)	C9—C15—H15B	109.5
N3—C4—C4A	116.6 (3)	H15A—C15—H15B	109.5
C8A—C4A—C5	120.0 (4)	C9—C15—H15C	109.5
C8A—C4A—C4	119.7 (3)	H15A—C15—H15C	109.5
C5—C4A—C4	120.2 (3)	H15B—C15—H15C	109.5
C6—C5—C4A	120.8 (3)	N3—C16—C17	113.1 (3)
C6—C5—H5	119.6	N3—C16—H16A	109.0
C4A—C5—H5	119.6	C17—C16—H16A	109.0
C5—C6—C7	119.2 (4)	N3—C16—H16B	109.0
C5—C6—H6	120.4	C17—C16—H16B	109.0
C7—C6—H6	120.4	H16A—C16—H16B	107.8
C8—C7—C6	121.1 (4)	C18—C17—O2	113.0 (3)
C8—C7—H7	119.4	C18—C17—C16	128.5 (3)
C6—C7—H7	119.4	O2—C17—C16	118.3 (3)
C7—C8—C8A	120.2 (3)	C17—C18—C19	103.4 (4)
C7—C8—H8	119.9	C17—C18—H18	128.3
C8A—C8—H8	119.9	C19—C18—H18	128.3
N1—C8A—C8	121.6 (3)	C20—C19—C18	109.5 (4)
N1—C8A—C4A	119.5 (3)	C20—C19—H19	125.3
C8—C8A—C4A	118.8 (3)	C18—C19—H19	125.3
C10—C9—C15	124.3 (3)	C19—C20—O2	110.5 (4)
C10—C9—C2	118.9 (3)	C19—C20—H20	124.8
C15—C9—C2	116.8 (3)	O2—C20—H20	124.8
C9—C10—C11	126.7 (3)
C8A—N1—C2—N3	40.4 (4)	N1—C2—C9—C10	130.5 (3)
C8A—N1—C2—C9	161.8 (3)	N3—C2—C9—C10	−109.4 (3)
N1—C2—N3—C4	−35.4 (4)	N1—C2—C9—C15	−49.0 (4)
C9—C2—N3—C4	−155.6 (3)	N3—C2—C9—C15	71.0 (4)
N1—C2—N3—C16	164.9 (3)	C15—C9—C10—C11	−1.5 (5)
C9—C2—N3—C16	44.8 (4)	C2—C9—C10—C11	179.0 (3)
C16—N3—C4—O3	−10.5 (5)	C14—O1—C11—C12	0.1 (4)
C2—N3—C4—O3	−169.9 (3)	C14—O1—C11—C10	−180.0 (3)
C16—N3—C4—C4A	173.0 (3)	C9—C10—C11—C12	−9.7 (6)
C2—N3—C4—C4A	13.6 (4)	C9—C10—C11—O1	170.4 (3)
O3—C4—C4A—C8A	−169.9 (3)	O1—C11—C12—C13	0.1 (4)
N3—C4—C4A—C8A	6.7 (4)	C10—C11—C12—C13	−179.8 (4)
O3—C4—C4A—C5	5.2 (5)	C11—C12—C13—C14	−0.3 (4)
N3—C4—C4A—C5	−178.3 (3)	C12—C13—C14—O1	0.4 (4)
C8A—C4A—C5—C6	1.3 (5)	C11—O1—C14—C13	−0.3 (4)
C4—C4A—C5—C6	−173.7 (3)	C4—N3—C16—C17	105.9 (4)
C4A—C5—C6—C7	−0.5 (6)	C2—N3—C16—C17	−93.5 (4)
C5—C6—C7—C8	−0.4 (6)	C20—O2—C17—C18	3.2 (4)
C6—C7—C8—C8A	0.6 (6)	C20—O2—C17—C16	178.6 (3)
C2—N1—C8A—C8	160.4 (3)	N3—C16—C17—C18	125.8 (4)
C2—N1—C8A—C4A	−24.1 (5)	N3—C16—C17—O2	−48.8 (4)
C7—C8—C8A—N1	175.7 (3)	O2—C17—C18—C19	−4.7 (4)
C7—C8—C8A—C4A	0.2 (5)	C16—C17—C18—C19	−179.5 (4)
C5—C4A—C8A—N1	−176.7 (3)	C17—C18—C19—C20	4.5 (5)
C4—C4A—C8A—N1	−1.7 (5)	C18—C19—C20—O2	−2.8 (6)
C5—C4A—C8A—C8	−1.1 (5)	C17—O2—C20—C19	−0.1 (5)
C4—C4A—C8A—C8	173.9 (3)

D—H···A	D—H	H···A	D···A	D—H···A
N1—H1···O3i	0.92 (4)	2.04 (4)	2.949 (4)	169 (3)