Literature DB >> 25878825

Crystal structure of 4-tert-butyl-2-{2-[N-(3,3-dimethyl-2-oxobut-yl)-N-iso-propyl-carbamo-yl]phen-yl}-1-isopropyl-1H-imidazol-3-ium perchlorate.

Olga V Hordiyenko1, Roman I Zubatyuk2.   

Abstract

In the title salt, C26H40N3O2 (+)·ClO4 (-), the positive charge of the organic cation is delocalized between the two N atoms of the imidazole ring. The C N bond distances are 1.338 (2) and 1.327 (3) Å. The substituents on the benzene ring are rotated almost orthogonal with respect to this ring due to the presence of the bulky isopropyl substituents. The dihedral angle between the benzene and imidazole rings is 75.15 (12)°. Three of the O atoms of the anion are disordered over two sets of sites due to rotation around one of the O-Cl bonds. The ratio of the refined occupancies is 0.591 (14):0.409 (14). In the crystal, the cation and perchlorate anion are bound by an N-H⋯O hydrogen bond. In addition, the cation-anion pairs are linked into layers parallel to (001) by multiple weak C-H⋯O hydrogen bonds.

Entities:  

Keywords:  crystal structure; disorder; perchlorate; α-acyl­amino ketone

Year:  2015        PMID: 25878825      PMCID: PMC4384572          DOI: 10.1107/S2056989015001486

Source DB:  PubMed          Journal:  Acta Crystallogr E Crystallogr Commun


Chemical context

α-Amino­ketones are known for their fungicidal activity (Gold de Sigman, 1983 ▸) and 2-acyl­amino­ketones are the starting compounds in the oxazole synthetic method by the Robinson–Gabriel synthesis by dehydration of 2-acyl­amino­ketones (Robinson, 1909 ▸; Gabriel, 1910 ▸; Wasserman & Vinick, 1973 ▸) that has been used during studies dealing with pharmaceut­ically important mol­ecules that incorporate an oxazole deriv­ative (Godfrey et al., 2003 ▸; Nicolaou et al., 2004 ▸; Hoffman et al., 2010 ▸).

Structural commentary

The mol­ecular structure of the cation is shown in Fig. 1 ▸. The positive charge is delocalized between the two nitro­gen atoms of the imidazole ring according to almost equivalent lengths of the C7—N1 and C7—N2 bonds [1.338 (2) Å and 1.327 (3) Å, respectively] and also of the C8—N1 and C9—N2 bonds [1.379 (3) Å and 1.374 (3) Å, respectively]. The presence of two bulky substituents in the ortho positions of the benzene ring results in disruption of the conjugation between the aromatic ring, imidazole ring and amide [N3/C17/O1] fragment due to their almost orthogonal orientation [the corresponding torsion angles are N1—C7—C1—C6 = −81.5 (3)° and C5—C6—C17—N3 = 81.1 (3)°]. The plane of the carbonyl group (C22/O2/C23/C21) is oriented almost orthogonal to the plane of the amide fragment (C21/N3/C18/C17/O1/C6), the angle between their mean planes being 77.87 (11)°. A similar type of α-acyl­amino­ketone fragment has been observed for other N-substituted α-acyl­amino­ketones (Bartnik et al., 1998 ▸; Tinant et al., 2006 ▸; Chai et al., 2011 ▸; Hashmi et al., 2011 ▸; Su et al., 2011 ▸).
Figure 1

View of the title compound showing the atom-numbering scheme and 30% probability displacement ellipsoids. For clarity, the ClO4 − anion and H atoms are not shown.

The organic cation and perchlorate anion are linked by an N—H⋯O hydrogen bond (Table 1 ▸). The oxygen atoms of the anion are disordered over two sets of sites due to rotation around the O3—Cl bond. The refined occupancy of the major disordered component is 0.591 (14).
Table 1

Hydrogen-bond geometry (, )

DHA DHHA D A DHA
N2H2O30.861.942.752(4)157
C2H2AO1i 0.932.443.319(3)158
C5H5O5A ii 0.932.553.328(11)141
C8H8O4A iii 0.932.363.285(8)173

Symmetry codes: (i) ; (ii) ; (iii) .

Supra­molecular features

Several moderate to weak C—H⋯O inter­molecular hydrogen bonds are observed in the crystal structure (Table 1 ▸), which link mol­ecules into layers parallel to (001) (Fig. 2 ▸). It should also be noted that the crystal structure contains no residual solvent-accessible voids. However, discernible layers along (101) are observed. The low density [1.18 g mm−1] of the crystal could be associated with formation of these layers.
Figure 2

Part of the crystal structure, viewed along the b axis, showing layers parallel to (001) formed by weak C—H⋯O hydrogen bonds (turquoise dotted lines) and also separated layers of organic cations parallel to (101). The minor disorder component of the anion is shown as red spheres.

Synthesis and crystallization

The title compound was synthesized according to the literature procedure (Hordiyenko et al., 2009 ▸). To a stirred solution of 1-(N-iso­propyl­amino)-3,3-di­methyl­butan-2-one (10 mmol) in dry CHCl3 (10 mL), a solution of 1,1,3-tri­chloro-1H-iso­indole (2.5 mmol) in dry CHCl3 (10 mL) was added dropwise at room temperature under an argon atmosphere. The reaction mixture was stirred for 8 h, the solvent was evaporated and the residue was dried under reduced pressure (0.01 mm). Then it was treated with 100 ml of distilled water. The aqueous solution was brought to reflux with charcoal, filtered and treated with an excess of lithium perchlorate to precipitate the crude product that was then crystallized from methanol/water (3:1) to yield as colorless crystals. Single crystals suitable for X-ray diffraction were obtained by slow evaporation of a solution of the title compound in ethanol.

Refinement

Crystal data, data collection and structure refinement details are summarized in Table 2 ▸. Hydrogen atoms were placed in calculated positions (N—H = 0.86 Å, C—H = 0.93–0.98 Å) and refined in a riding-model approximation with U iso = nU eq of the carrier atom (n = 1.5 for methyl groups, n = 1.2 for the remaining H atoms). Methyl groups were refined as rotating groups. The relative occupation of the two positions of the disordered ClO4 anion was refined as a free variable. All Cl—O and O⋯O distances within the anion were restrained to be the same within 0.02 Å.
Table 2

Experimental details

Crystal data
Chemical formulaC26H40N3O2 +ClO4
M r 526.06
Crystal system, space groupMonoclinic, P21/n
Temperature (K)293
a, b, c ()10.0605(3), 12.7027(4), 23.1455(6)
()94.107(3)
V (3)2950.29(14)
Z 4
Radiation typeMo K
(mm1)0.17
Crystal size (mm)0.57 0.32 0.09
 
Data collection
DiffractometerAgilent Xcalibur Sapphire3
Absorption correctionMulti-scan (CrysAlis PRO; Agilent, 2014)
T min, T max 0.951, 1.000
No. of measured, independent and observed [I > 2(I)] reflections27330, 6037, 4458
R int 0.029
(sin /)max (1)0.626
 
Refinement
R[F 2 > 2(F 2)], wR(F 2), S 0.060, 0.179, 1.04
No. of reflections6037
No. of parameters363
No. of restraints87
H-atom treatmentH-atom parameters constrained
max, min (e 3)0.37, 0.33

Computer programs: CrysAlis PRO (Agilent, 2014 ▸), SHELXD (Sheldrick, 2008 ▸), SHELXL97 (Sheldrick, 2015 ▸) and OLEX2 (Dolomanov et al., 2009 ▸).

Crystal structure: contains datablock(s) I. DOI: 10.1107/S2056989015001486/lh5748sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S2056989015001486/lh5748Isup2.hkl Click here for additional data file. Supporting information file. DOI: 10.1107/S2056989015001486/lh5748Isup3.smi Click here for additional data file. Supporting information file. DOI: 10.1107/S2056989015001486/lh5748Isup4.cml CCDC reference: 1045018 Additional supporting information: crystallographic information; 3D view; checkCIF report
C26H40N3O2+·ClO4F(000) = 1128
Mr = 526.06Dx = 1.184 Mg m3
Monoclinic, P21/nMo Kα radiation, λ = 0.71073 Å
a = 10.0605 (3) ÅCell parameters from 6208 reflections
b = 12.7027 (4) Åθ = 3.2–26.2°
c = 23.1455 (6) ŵ = 0.17 mm1
β = 94.107 (3)°T = 293 K
V = 2950.29 (14) Å3Block, colorless
Z = 40.57 × 0.32 × 0.09 mm
Agilent Xcalibur Sapphire3 diffractometer6037 independent reflections
Radiation source: Enhance (Mo) X-ray Source4458 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.029
Detector resolution: 16.1827 pixels mm-1θmax = 26.4°, θmin = 3.1°
ω and π scansh = −12→12
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2014)k = −15→15
Tmin = 0.951, Tmax = 1.000l = −28→28
27330 measured reflections
Refinement on F2Primary atom site location: dual
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.060H-atom parameters constrained
wR(F2) = 0.179w = 1/[σ2(Fo2) + (0.0837P)2 + 1.4781P] where P = (Fo2 + 2Fc2)/3
S = 1.04(Δ/σ)max < 0.001
6037 reflectionsΔρmax = 0.37 e Å3
363 parametersΔρmin = −0.33 e Å3
87 restraints
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.
xyzUiso*/UeqOcc. (<1)
O10.72746 (17)0.14319 (15)0.71062 (9)0.0685 (5)
O20.7339 (3)0.25979 (17)0.58916 (9)0.0915 (7)
N20.67413 (16)0.47485 (14)0.66538 (8)0.0421 (4)
H20.59350.49620.65830.051*
N10.84449 (16)0.39425 (14)0.70494 (7)0.0416 (4)
C70.71299 (19)0.40741 (15)0.70699 (9)0.0383 (4)
C80.8863 (2)0.45571 (18)0.66063 (9)0.0450 (5)
H80.97350.46140.65010.054*
C10.62173 (19)0.36474 (16)0.74861 (9)0.0398 (4)
C60.5700 (2)0.26255 (16)0.74384 (9)0.0420 (5)
C90.7801 (2)0.50599 (18)0.63519 (9)0.0442 (5)
N30.54488 (19)0.17087 (15)0.65053 (8)0.0496 (5)
C170.6201 (2)0.18761 (16)0.70018 (10)0.0463 (5)
C100.9309 (2)0.32719 (18)0.74425 (10)0.0488 (5)
H100.87390.27990.76500.059*
C20.5770 (2)0.43279 (19)0.79004 (11)0.0537 (6)
H2A0.61060.50090.79310.064*
C50.4771 (2)0.23065 (19)0.78176 (10)0.0538 (6)
H50.44370.16240.77950.065*
C40.4338 (3)0.2986 (2)0.82254 (11)0.0609 (7)
H40.37100.27630.84750.073*
C210.6048 (3)0.10861 (19)0.60668 (11)0.0570 (6)
H21A0.53510.08160.57950.068*
H21B0.65090.04900.62500.068*
C130.7626 (2)0.5776 (2)0.58316 (11)0.0566 (6)
C30.4831 (3)0.3996 (2)0.82658 (11)0.0625 (7)
H30.45290.44560.85400.075*
C220.7029 (3)0.1726 (2)0.57379 (11)0.0625 (7)
C180.4094 (3)0.2141 (2)0.63707 (11)0.0592 (6)
H180.39520.26950.66540.071*
C111.0206 (3)0.2608 (3)0.70900 (14)0.0773 (8)
H11A0.96820.22740.67790.116*
H11B1.06370.20800.73340.116*
H11C1.08670.30490.69340.116*
C121.0089 (3)0.3951 (3)0.78810 (14)0.0817 (9)
H12A1.06510.44220.76850.123*
H12B1.06300.35120.81410.123*
H12C0.94840.43510.80970.123*
C140.6630 (4)0.5257 (3)0.53881 (14)0.0929 (11)
H14A0.69560.45770.52860.139*
H14B0.65240.56890.50480.139*
H14C0.57860.51810.55520.139*
C200.3049 (3)0.1288 (3)0.64423 (14)0.0758 (8)
H20A0.32030.07110.61880.114*
H20B0.21770.15730.63480.114*
H20C0.31110.10450.68360.114*
C160.7086 (4)0.6841 (3)0.60196 (16)0.0877 (10)
H16A0.62570.67360.61930.132*
H16B0.69460.72910.56880.132*
H16C0.77170.71620.62960.132*
C230.7609 (3)0.1226 (3)0.52116 (13)0.0782 (9)
C250.7743 (5)0.0024 (3)0.52725 (19)0.1192 (15)
H25A0.8327−0.01390.56070.179*
H25B0.8104−0.02590.49330.179*
H25C0.6882−0.02780.53160.179*
C150.8972 (3)0.5924 (3)0.55791 (15)0.0943 (11)
H15A0.95900.62320.58660.141*
H15B0.88700.63790.52480.141*
H15C0.93040.52530.54640.141*
C190.3955 (4)0.2640 (3)0.57734 (13)0.0843 (9)
H19A0.46490.31510.57410.127*
H19B0.31030.29800.57180.127*
H19C0.40240.21060.54840.127*
C260.6614 (5)0.1441 (4)0.46941 (16)0.1277 (16)
H26A0.57690.11310.47640.192*
H26B0.69390.11390.43510.192*
H26C0.65080.21870.46430.192*
C240.8914 (5)0.1763 (5)0.5105 (3)0.177 (3)
H24A0.87600.25010.50390.265*
H24B0.92770.14580.47710.265*
H24C0.95320.16710.54360.265*
Cl10.29860 (6)0.54707 (6)0.65153 (4)0.0755 (3)
O30.4025 (3)0.4841 (3)0.64132 (19)0.1626 (16)
O4A0.1909 (7)0.4970 (13)0.6233 (5)0.233 (7)0.591 (14)
O5A0.2680 (11)0.5578 (8)0.7063 (3)0.177 (5)0.591 (14)
O6A0.3130 (16)0.6413 (6)0.6273 (7)0.276 (10)0.591 (14)
O6B0.3652 (14)0.6383 (9)0.6691 (8)0.235 (10)0.409 (14)
O4B0.2175 (13)0.5692 (15)0.6066 (6)0.216 (10)0.409 (14)
O5B0.2331 (17)0.5113 (17)0.6954 (8)0.316 (17)0.409 (14)
U11U22U33U12U13U23
O10.0517 (10)0.0604 (11)0.0927 (13)0.0105 (8)0.0006 (9)−0.0208 (10)
O20.1285 (19)0.0672 (13)0.0840 (14)−0.0322 (13)0.0444 (13)−0.0187 (11)
N20.0307 (8)0.0455 (10)0.0506 (10)0.0019 (7)0.0051 (7)0.0055 (8)
N10.0334 (8)0.0437 (9)0.0480 (10)0.0036 (7)0.0054 (7)0.0018 (8)
C70.0356 (10)0.0363 (10)0.0435 (10)−0.0001 (8)0.0072 (8)−0.0008 (8)
C80.0339 (10)0.0532 (12)0.0489 (12)−0.0025 (9)0.0100 (8)0.0042 (10)
C10.0357 (10)0.0408 (11)0.0437 (11)0.0003 (8)0.0075 (8)0.0001 (9)
C60.0419 (11)0.0407 (11)0.0437 (11)−0.0004 (8)0.0062 (8)0.0012 (9)
C90.0364 (10)0.0496 (12)0.0471 (11)−0.0044 (9)0.0064 (8)0.0047 (9)
N30.0583 (11)0.0440 (10)0.0474 (10)0.0052 (8)0.0108 (8)−0.0045 (8)
C170.0500 (12)0.0341 (10)0.0562 (13)−0.0023 (9)0.0129 (10)−0.0007 (9)
C100.0425 (11)0.0502 (13)0.0532 (12)0.0078 (9)0.0003 (9)0.0068 (10)
C20.0567 (14)0.0449 (12)0.0614 (14)−0.0075 (10)0.0185 (11)−0.0092 (10)
C50.0567 (14)0.0501 (13)0.0561 (13)−0.0130 (10)0.0151 (11)0.0002 (10)
C40.0593 (14)0.0713 (17)0.0550 (14)−0.0132 (12)0.0241 (11)−0.0034 (12)
C210.0699 (16)0.0465 (13)0.0565 (14)0.0007 (11)0.0176 (12)−0.0113 (11)
C130.0482 (13)0.0664 (15)0.0549 (13)−0.0077 (11)0.0015 (10)0.0206 (12)
C30.0661 (16)0.0669 (16)0.0578 (14)−0.0076 (13)0.0273 (12)−0.0159 (12)
C220.0750 (17)0.0586 (16)0.0553 (14)−0.0039 (13)0.0150 (12)−0.0095 (12)
C180.0714 (16)0.0542 (14)0.0512 (13)0.0172 (12)−0.0007 (11)−0.0072 (11)
C110.0663 (17)0.0764 (19)0.090 (2)0.0317 (15)0.0076 (15)−0.0001 (16)
C120.085 (2)0.079 (2)0.0765 (19)0.0132 (17)−0.0260 (16)−0.0101 (16)
C140.104 (3)0.107 (3)0.0633 (18)−0.032 (2)−0.0244 (17)0.0306 (18)
C200.0575 (16)0.087 (2)0.083 (2)0.0093 (14)0.0054 (14)−0.0102 (16)
C160.093 (2)0.071 (2)0.099 (2)0.0079 (17)0.0018 (18)0.0326 (18)
C230.084 (2)0.088 (2)0.0668 (17)−0.0032 (16)0.0307 (15)−0.0167 (15)
C250.150 (4)0.109 (3)0.103 (3)0.036 (3)0.042 (3)−0.029 (2)
C150.0691 (19)0.134 (3)0.082 (2)−0.0079 (19)0.0244 (16)0.048 (2)
C190.115 (3)0.076 (2)0.0605 (17)0.0214 (18)−0.0077 (16)0.0058 (15)
C260.169 (4)0.150 (4)0.064 (2)0.021 (3)0.011 (2)−0.016 (2)
C240.136 (4)0.234 (7)0.174 (5)−0.073 (4)0.105 (4)−0.088 (5)
Cl10.0441 (4)0.0817 (5)0.1017 (6)0.0188 (3)0.0118 (3)−0.0090 (4)
O30.0613 (15)0.151 (3)0.274 (5)0.0386 (17)0.002 (2)−0.070 (3)
O4A0.054 (3)0.45 (2)0.195 (10)−0.068 (7)0.005 (4)−0.011 (11)
O5A0.236 (12)0.177 (8)0.126 (6)0.064 (8)0.076 (6)−0.025 (5)
O6A0.38 (2)0.108 (6)0.37 (2)0.114 (9)0.229 (15)0.112 (9)
O6B0.272 (16)0.184 (13)0.248 (18)−0.150 (12)0.012 (13)−0.095 (12)
O4B0.089 (9)0.35 (3)0.194 (12)0.039 (11)−0.079 (9)0.058 (14)
O5B0.179 (14)0.45 (3)0.33 (3)−0.035 (18)0.145 (18)0.20 (3)
O1—C171.227 (3)C11—H11B0.9600
O2—C221.197 (3)C11—H11C0.9600
N2—H20.8600C12—H12A0.9600
N2—C71.327 (3)C12—H12B0.9600
N2—C91.374 (3)C12—H12C0.9600
N1—C71.338 (2)C14—H14A0.9600
N1—C81.379 (3)C14—H14B0.9600
N1—C101.482 (3)C14—H14C0.9600
C7—C11.480 (3)C20—H20A0.9600
C8—H80.9300C20—H20B0.9600
C8—C91.344 (3)C20—H20C0.9600
C1—C61.400 (3)C16—H16A0.9600
C1—C21.389 (3)C16—H16B0.9600
C6—C171.501 (3)C16—H16C0.9600
C6—C51.388 (3)C23—C251.537 (5)
C9—C131.510 (3)C23—C261.530 (5)
N3—C171.347 (3)C23—C241.516 (5)
N3—C211.451 (3)C25—H25A0.9600
N3—C181.482 (3)C25—H25B0.9600
C10—H100.9800C25—H25C0.9600
C10—C111.515 (4)C15—H15A0.9600
C10—C121.508 (4)C15—H15B0.9600
C2—H2A0.9300C15—H15C0.9600
C2—C31.379 (3)C19—H19A0.9600
C5—H50.9300C19—H19B0.9600
C5—C41.373 (3)C19—H19C0.9600
C4—H40.9300C26—H26A0.9600
C4—C31.376 (4)C26—H26B0.9600
C21—H21A0.9700C26—H26C0.9600
C21—H21B0.9700C24—H24A0.9600
C21—C221.524 (4)C24—H24B0.9600
C13—C141.532 (4)C24—H24C0.9600
C13—C161.532 (4)Cl1—O31.350 (3)
C13—C151.524 (4)Cl1—O4A1.380 (7)
C3—H30.9300Cl1—O5A1.333 (6)
C22—C231.526 (4)Cl1—O6A1.334 (6)
C18—H180.9800Cl1—O6B1.385 (7)
C18—C201.527 (4)Cl1—O4B1.306 (8)
C18—C191.518 (4)Cl1—O5B1.329 (9)
C11—H11A0.9600
C7—N2—H2124.6C10—C12—H12A109.5
C7—N2—C9110.85 (17)C10—C12—H12B109.5
C9—N2—H2124.6C10—C12—H12C109.5
C7—N1—C8108.12 (17)H12A—C12—H12B109.5
C7—N1—C10126.04 (18)H12A—C12—H12C109.5
C8—N1—C10125.83 (17)H12B—C12—H12C109.5
N2—C7—N1107.20 (17)C13—C14—H14A109.5
N2—C7—C1122.99 (17)C13—C14—H14B109.5
N1—C7—C1129.68 (18)C13—C14—H14C109.5
N1—C8—H8125.7H14A—C14—H14B109.5
C9—C8—N1108.64 (18)H14A—C14—H14C109.5
C9—C8—H8125.7H14B—C14—H14C109.5
C6—C1—C7122.16 (18)C18—C20—H20A109.5
C2—C1—C7117.89 (19)C18—C20—H20B109.5
C2—C1—C6119.65 (19)C18—C20—H20C109.5
C1—C6—C17120.04 (18)H20A—C20—H20B109.5
C5—C6—C1119.0 (2)H20A—C20—H20C109.5
C5—C6—C17120.9 (2)H20B—C20—H20C109.5
N2—C9—C13121.92 (19)C13—C16—H16A109.5
C8—C9—N2105.19 (18)C13—C16—H16B109.5
C8—C9—C13132.8 (2)C13—C16—H16C109.5
C17—N3—C21116.5 (2)H16A—C16—H16B109.5
C17—N3—C18124.95 (18)H16A—C16—H16C109.5
C21—N3—C18118.49 (19)H16B—C16—H16C109.5
O1—C17—C6119.5 (2)C22—C23—C25112.1 (3)
O1—C17—N3121.9 (2)C22—C23—C26106.6 (3)
N3—C17—C6118.65 (19)C26—C23—C25107.3 (3)
N1—C10—H10108.4C24—C23—C22109.1 (3)
N1—C10—C11109.6 (2)C24—C23—C25113.0 (4)
N1—C10—C12109.8 (2)C24—C23—C26108.5 (4)
C11—C10—H10108.4C23—C25—H25A109.5
C12—C10—H10108.4C23—C25—H25B109.5
C12—C10—C11112.3 (2)C23—C25—H25C109.5
C1—C2—H2A119.9H25A—C25—H25B109.5
C3—C2—C1120.2 (2)H25A—C25—H25C109.5
C3—C2—H2A119.9H25B—C25—H25C109.5
C6—C5—H5119.6C13—C15—H15A109.5
C4—C5—C6120.8 (2)C13—C15—H15B109.5
C4—C5—H5119.6C13—C15—H15C109.5
C5—C4—H4119.9H15A—C15—H15B109.5
C5—C4—C3120.2 (2)H15A—C15—H15C109.5
C3—C4—H4119.9H15B—C15—H15C109.5
N3—C21—H21A109.2C18—C19—H19A109.5
N3—C21—H21B109.2C18—C19—H19B109.5
N3—C21—C22112.0 (2)C18—C19—H19C109.5
H21A—C21—H21B107.9H19A—C19—H19B109.5
C22—C21—H21A109.2H19A—C19—H19C109.5
C22—C21—H21B109.2H19B—C19—H19C109.5
C9—C13—C14108.0 (2)C23—C26—H26A109.5
C9—C13—C16109.2 (2)C23—C26—H26B109.5
C9—C13—C15108.9 (2)C23—C26—H26C109.5
C14—C13—C16110.0 (3)H26A—C26—H26B109.5
C15—C13—C14110.6 (3)H26A—C26—H26C109.5
C15—C13—C16110.1 (3)H26B—C26—H26C109.5
C2—C3—H3119.9C23—C24—H24A109.5
C4—C3—C2120.2 (2)C23—C24—H24B109.5
C4—C3—H3119.9C23—C24—H24C109.5
O2—C22—C21120.6 (2)H24A—C24—H24B109.5
O2—C22—C23121.1 (3)H24A—C24—H24C109.5
C21—C22—C23118.3 (2)H24B—C24—H24C109.5
N3—C18—H18107.6O3—Cl1—O4A103.6 (6)
N3—C18—C20110.1 (2)O3—Cl1—O6B100.5 (6)
N3—C18—C19111.7 (2)O5A—Cl1—O3117.5 (5)
C20—C18—H18107.6O5A—Cl1—O4A105.7 (6)
C19—C18—H18107.6O5A—Cl1—O6A110.3 (6)
C19—C18—C20112.1 (2)O6A—Cl1—O3110.4 (5)
C10—C11—H11A109.5O6A—Cl1—O4A108.7 (7)
C10—C11—H11B109.5O4B—Cl1—O3115.8 (7)
C10—C11—H11C109.5O4B—Cl1—O6B108.4 (8)
H11A—C11—H11B109.5O4B—Cl1—O5B111.5 (8)
H11A—C11—H11C109.5O5B—Cl1—O3111.3 (8)
H11B—C11—H11C109.5O5B—Cl1—O6B108.6 (9)
O2—C22—C23—C25148.6 (4)C1—C2—C3—C40.5 (4)
O2—C22—C23—C26−94.3 (4)C6—C1—C2—C30.5 (4)
O2—C22—C23—C2422.6 (5)C6—C5—C4—C3−0.4 (4)
N2—C7—C1—C6103.3 (2)C9—N2—C7—N10.5 (2)
N2—C7—C1—C2−70.4 (3)C9—N2—C7—C1176.64 (19)
N2—C9—C13—C14−56.9 (3)N3—C21—C22—O28.0 (4)
N2—C9—C13—C1662.6 (3)N3—C21—C22—C23−172.3 (2)
N2—C9—C13—C15−177.1 (3)C17—C6—C5—C4178.5 (2)
N1—C7—C1—C6−81.5 (3)C17—N3—C21—C22−78.2 (3)
N1—C7—C1—C2104.8 (3)C17—N3—C18—C20−102.9 (3)
N1—C8—C9—N20.8 (2)C17—N3—C18—C19131.9 (2)
N1—C8—C9—C13−175.9 (2)C10—N1—C7—N2178.70 (19)
C7—N2—C9—C8−0.8 (2)C10—N1—C7—C12.9 (3)
C7—N2—C9—C13176.3 (2)C10—N1—C8—C9−179.2 (2)
C7—N1—C8—C9−0.5 (2)C2—C1—C6—C17−178.5 (2)
C7—N1—C10—C11133.0 (2)C2—C1—C6—C5−1.5 (3)
C7—N1—C10—C12−103.2 (3)C5—C6—C17—O1−98.6 (3)
C7—C1—C6—C177.9 (3)C5—C6—C17—N381.1 (3)
C7—C1—C6—C5−175.1 (2)C5—C4—C3—C2−0.6 (4)
C7—C1—C2—C3174.4 (2)C21—N3—C17—O1−7.9 (3)
C8—N1—C7—N20.0 (2)C21—N3—C17—C6172.35 (19)
C8—N1—C7—C1−175.8 (2)C21—N3—C18—C2079.4 (3)
C8—N1—C10—C11−48.5 (3)C21—N3—C18—C19−45.8 (3)
C8—N1—C10—C1275.3 (3)C21—C22—C23—C25−31.2 (4)
C8—C9—C13—C14119.3 (3)C21—C22—C23—C2685.9 (4)
C8—C9—C13—C16−121.2 (3)C21—C22—C23—C24−157.1 (4)
C8—C9—C13—C15−0.9 (4)C18—N3—C17—O1174.4 (2)
C1—C6—C17—O178.3 (3)C18—N3—C17—C6−5.4 (3)
C1—C6—C17—N3−101.9 (2)C18—N3—C21—C2299.7 (3)
C1—C6—C5—C41.5 (4)
D—H···AD—HH···AD···AD—H···A
N2—H2···O30.861.942.752 (4)157
C2—H2A···O1i0.932.443.319 (3)158
C5—H5···O5Aii0.932.553.328 (11)141
C8—H8···O4Aiii0.932.363.285 (8)173
C10—H10···O10.982.553.167 (3)121
  7 in total

1.  Application of the Dakin-West reaction for the synthesis of oxazole-containing dual PPARalpha/gamma agonists.

Authors:  Alexander G Godfrey; Dawn A Brooks; Lynne A Hay; Mary Peters; James R McCarthy; David Mitchell
Journal:  J Org Chem       Date:  2003-04-04       Impact factor: 4.354

2.  Chemistry and biology of diazonamide A: second total synthesis and biological investigations.

Authors:  K C Nicolaou; Junliang Hao; Mali V Reddy; Paraselli Bheema Rao; Gerasimos Rassias; Scott A Snyder; Xianhai Huang; David Y-K Chen; William E Brenzovich; Nicolas Giuseppone; Aurora O'Brate; Paraskevi Giannakakou
Journal:  J Am Chem Soc       Date:  2004-10-13       Impact factor: 15.419

3.  A short history of SHELX.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr A       Date:  2007-12-21       Impact factor: 2.290

4.  Stereoselective synthesis of the C1-C11 and C12-C34 fragments of mycalolide A.

Authors:  Thomas J Hoffman; Amandine Kolleth; James H Rigby; Stellios Arseniyadis; Janine Cossy
Journal:  Org Lett       Date:  2010-08-06       Impact factor: 6.005

5.  Synthesis of 2-oxazolones and α-aminoketones via palladium-catalyzed reaction of β,β-dibromoenamides.

Authors:  David I Chai; Laura Hoffmeister; Mark Lautens
Journal:  Org Lett       Date:  2010-12-02       Impact factor: 6.005

6.  Scalable, stereocontrolled total syntheses of (±)-axinellamines A and B.

Authors:  Shun Su; Rodrigo A Rodriguez; Phil S Baran
Journal:  J Am Chem Soc       Date:  2011-08-16       Impact factor: 15.419

7.  Crystal structure refinement with SHELXL.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr C Struct Chem       Date:  2015-01-01       Impact factor: 1.172

  7 in total

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