Literature DB >> 21200778

2-Methyl-5-(4-tol-yl)-7-(trifluoro-meth-yl)pyrazolo[1,5-a]pyrimidine.

Clarissa P Frizzo1, Patrick T Campos, Mara R B Marzari, Pablo Machado, Marcos A P Martins.   

Abstract

In the title compound, C(15)H(12)F(3)N(3), the pyrazolo[1,5-a]pyrimidine system ring is essentially planar with a maximum deviation from the mean plane of 0.014 (1) Å. The 4-tolyl group makes a dihedral angle of 14.1 (1)° with the pyrazolo[1,5-a]pyrimidine ring system. The crystal packing is stabilized mainly by van der Waals forces.

Entities:  

Year:  2007        PMID: 21200778      PMCID: PMC2915273          DOI: 10.1107/S1600536807064318

Source DB:  PubMed          Journal:  Acta Crystallogr Sect E Struct Rep Online        ISSN: 1600-5368


Related literature

For related pyrazolopyrimidine compounds, see: Wen et al. (2004 ▶, 2005 ▶); Oliveira-Campos et al. (2006 ▶). For related literature and the synthetic procedure, see: Martins et al. (2004 ▶, 2006 ▶). For the pharmacological activity, see: Almanza et al. (2001 ▶); Novinson et al. (1977 ▶); George (2001 ▶).

Experimental

Crystal data

C15H12F3N3 M = 291.28 Triclinic, a = 4.8715 (2) Å b = 11.2655 (5) Å c = 13.5584 (6) Å α = 110.225 (3)° β = 96.808 (3)° γ = 99.835 (3)° V = 675.13 (5) Å3 Z = 2 Mo Kα radiation μ = 0.12 mm−1 T = 293 (2) K 0.98 × 0.21 × 0.20 mm

Data collection

Bruker X8 APEXII diffractometer Absorption correction: multi-scan (XPREP; Bruker, 2006 ▶) T min = 0.874, T max = 0.977 16787 measured reflections 3757 independent reflections 2200 reflections with I > 2σ(I) R int = 0.040

Refinement

R[F 2 > 2σ(F 2)] = 0.057 wR(F 2) = 0.227 S = 1.05 3757 reflections 190 parameters H-atom parameters constrained Δρmax = 0.40 e Å−3 Δρmin = −0.45 e Å−3 Data collection: APEX2 (Bruker, 2006 ▶); cell refinement: SAINT (Bruker, 2006 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997 ▶); molecular graphics: ORTEP-3 (Farrugia, 1997 ▶); software used to prepare material for publication: SHELXL97. Crystal structure: contains datablocks I, global. DOI: 10.1107/S1600536807064318/xu2373sup1.cif Structure factors: contains datablocks I. DOI: 10.1107/S1600536807064318/xu2373Isup2.hkl Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C15H12F3N3Z = 2
Mr = 291.28F000 = 300
Triclinic, P1Dx = 1.433 Mg m3
Hall symbol: -P 1Melting point = 415–416 K
a = 4.8715 (2) ÅMo Kα radiation λ = 0.71073 Å
b = 11.2655 (5) ÅCell parameters from 150 reflections
c = 13.5584 (6) Åθ = 3.0–24.6º
α = 110.225 (3)ºµ = 0.12 mm1
β = 96.808 (3)ºT = 293 (2) K
γ = 99.835 (3)ºBlock, yellow
V = 675.13 (5) Å30.98 × 0.21 × 0.20 mm
X8 APEXII diffractometer2200 reflections with I > 2σ(I)
Monochromator: graphiteRint = 0.040
T = 293(2) Kθmax = 29.7º
φ and ω scansθmin = 1.6º
Absorption correction: multi-scan(XPREP; Bruker, 2006)h = −6→6
Tmin = 0.874, Tmax = 0.977k = −15→15
16787 measured reflectionsl = −18→18
3757 independent reflections
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.057H-atom parameters constrained
wR(F2) = 0.227  w = 1/[σ2(Fo2) + (0.1373P)2] where P = (Fo2 + 2Fc2)/3
S = 1.05(Δ/σ)max < 0.001
3757 reflectionsΔρmax = 0.40 e Å3
190 parametersΔρmin = −0.45 e Å3
Primary atom site location: structure-invariant direct methodsExtinction correction: none
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.
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.
xyzUiso*/Ueq
N4−0.1395 (3)0.64063 (13)0.15766 (10)0.0437 (4)
C510.2301 (3)0.60519 (16)0.27094 (13)0.0434 (4)
C50.0595 (3)0.69036 (16)0.24463 (12)0.0427 (4)
N1A−0.2415 (3)0.85107 (14)0.19699 (11)0.0475 (4)
C3A−0.2918 (3)0.71919 (16)0.13244 (13)0.0443 (4)
C7−0.0385 (4)0.90322 (17)0.28737 (15)0.0517 (4)
N1−0.4126 (3)0.91420 (15)0.15720 (13)0.0560 (4)
C60.1130 (4)0.82475 (17)0.31325 (14)0.0501 (4)
H60.25140.85770.37530.06*
C560.2277 (4)0.48484 (18)0.19505 (14)0.0526 (5)
H560.11650.45750.12710.063*
C550.3880 (4)0.40510 (18)0.21898 (15)0.0571 (5)
H550.3810.32450.16680.069*
C520.4029 (4)0.64261 (19)0.37085 (15)0.0584 (5)
H520.40970.7230.42330.07*
C540.5592 (4)0.44182 (19)0.31862 (15)0.0539 (5)
C3−0.5081 (4)0.69986 (19)0.04969 (15)0.0514 (4)
H3−0.59390.622−0.00680.062*
C2−0.5725 (4)0.81980 (18)0.06756 (15)0.0522 (5)
C530.5645 (5)0.5626 (2)0.39352 (16)0.0631 (5)
H530.67960.59060.46080.076*
C80.7329 (5)0.3537 (2)0.34284 (18)0.0700 (6)
H8A0.70310.27540.28070.105*
H8B0.67630.33270.40140.105*
H8C0.93030.39670.36190.105*
C710.0064 (5)1.0448 (2)0.3532 (2)0.0714 (6)
C21−0.7881 (4)0.8562 (2)0.00171 (18)0.0689 (6)
H21A−0.78280.94710.03530.103*
H21B−0.97380.8064−0.00360.103*
H21C−0.74570.8385−0.06860.103*
F3−0.2264 (3)1.07474 (12)0.38784 (11)0.0893 (5)
F10.2076 (3)1.07989 (12)0.43939 (12)0.1008 (6)
F20.0852 (3)1.11914 (12)0.29935 (14)0.1004 (5)
U11U22U33U12U13U23
N40.0444 (8)0.0425 (8)0.0452 (7)0.0121 (6)0.0056 (6)0.0175 (6)
C510.0427 (9)0.0434 (9)0.0449 (9)0.0114 (7)0.0059 (6)0.0177 (7)
C50.0430 (9)0.0401 (9)0.0447 (9)0.0100 (6)0.0078 (6)0.0155 (7)
N1A0.0449 (8)0.0430 (8)0.0557 (8)0.0131 (6)0.0048 (6)0.0197 (7)
C3A0.0449 (9)0.0425 (9)0.0476 (9)0.0113 (7)0.0081 (7)0.0191 (7)
C70.0478 (10)0.0399 (9)0.0606 (11)0.0105 (7)0.0043 (8)0.0121 (8)
N10.0507 (9)0.0533 (10)0.0723 (10)0.0189 (7)0.0068 (7)0.0318 (8)
C60.0472 (10)0.0425 (9)0.0522 (10)0.0106 (7)−0.0016 (7)0.0109 (8)
C560.0583 (11)0.0473 (10)0.0510 (10)0.0183 (8)0.0021 (8)0.0168 (8)
C550.0628 (12)0.0511 (11)0.0613 (11)0.0257 (9)0.0107 (9)0.0201 (9)
C520.0654 (12)0.0500 (11)0.0530 (10)0.0179 (9)−0.0029 (9)0.0133 (8)
C540.0471 (10)0.0617 (12)0.0653 (11)0.0200 (8)0.0125 (8)0.0346 (9)
C30.0495 (10)0.0514 (10)0.0526 (9)0.0108 (7)0.0018 (7)0.0213 (8)
C20.0453 (9)0.0570 (11)0.0617 (11)0.0134 (8)0.0080 (8)0.0310 (9)
C530.0654 (12)0.0637 (13)0.0580 (11)0.0204 (9)−0.0065 (9)0.0233 (10)
C80.0662 (13)0.0779 (14)0.0844 (15)0.0355 (11)0.0151 (11)0.0438 (12)
C710.0619 (13)0.0448 (11)0.0919 (16)0.0169 (9)−0.0039 (11)0.0104 (11)
C210.0577 (12)0.0765 (15)0.0826 (14)0.0196 (10)0.0006 (10)0.0442 (12)
F30.0826 (10)0.0650 (9)0.1014 (10)0.0344 (7)0.0122 (8)0.0017 (7)
F10.0906 (11)0.0543 (8)0.1095 (11)0.0197 (7)−0.0302 (9)−0.0132 (7)
F20.0970 (11)0.0468 (8)0.1534 (14)0.0113 (7)0.0153 (10)0.0378 (8)
N4—C51.316 (2)C52—C531.379 (3)
N4—C3A1.351 (2)C52—H520.93
C51—C561.387 (2)C54—C531.382 (3)
C51—C521.391 (2)C54—C81.502 (3)
C51—C51.475 (2)C3—C21.385 (3)
C5—C61.435 (2)C3—H30.93
N1A—C71.357 (2)C2—C211.499 (3)
N1A—N11.3609 (19)C53—H530.93
N1A—C3A1.400 (2)C8—H8A0.96
C3A—C31.375 (2)C8—H8B0.96
C7—C61.351 (2)C8—H8C0.96
C7—C711.496 (3)C71—F11.326 (2)
N1—C21.347 (2)C71—F21.328 (3)
C6—H60.93C71—F31.330 (3)
C56—C551.380 (2)C21—H21A0.96
C56—H560.93C21—H21B0.96
C55—C541.386 (3)C21—H21C0.96
C55—H550.93
C5—N4—C3A118.71 (14)C53—C54—C8121.90 (18)
C56—C51—C52117.46 (16)C55—C54—C8120.90 (18)
C56—C51—C5120.61 (15)C3A—C3—C2106.06 (16)
C52—C51—C5121.91 (15)C3A—C3—H3127
N4—C5—C6121.31 (15)C2—C3—H3127
N4—C5—C51118.72 (14)N1—C2—C3113.05 (16)
C6—C5—C51119.96 (15)N1—C2—C21117.78 (17)
C7—N1A—N1127.00 (15)C3—C2—C21129.17 (17)
C7—N1A—C3A120.58 (14)C52—C53—C54121.53 (17)
N1—N1A—C3A112.42 (14)C52—C53—H53119.2
N4—C3A—C3133.62 (16)C54—C53—H53119.2
N4—C3A—N1A121.23 (15)C54—C8—H8A109.5
C3—C3A—N1A105.15 (15)C54—C8—H8B109.5
C6—C7—N1A118.36 (16)H8A—C8—H8B109.5
C6—C7—C71123.34 (17)C54—C8—H8C109.5
N1A—C7—C71118.31 (16)H8A—C8—H8C109.5
C2—N1—N1A103.32 (14)H8B—C8—H8C109.5
C7—C6—C5119.78 (16)F1—C71—F2107.13 (18)
C7—C6—H6120.1F1—C71—F3106.74 (19)
C5—C6—H6120.1F2—C71—F3107.32 (18)
C55—C56—C51120.88 (17)F1—C71—C7110.86 (17)
C55—C56—H56119.6F2—C71—C7112.3 (2)
C51—C56—H56119.6F3—C71—C7112.17 (18)
C56—C55—C54121.77 (17)C2—C21—H21A109.5
C56—C55—H55119.1C2—C21—H21B109.5
C54—C55—H55119.1H21A—C21—H21B109.5
C53—C52—C51121.14 (17)C2—C21—H21C109.5
C53—C52—H52119.4H21A—C21—H21C109.5
C51—C52—H52119.4H21B—C21—H21C109.5
C53—C54—C55117.20 (17)
N4—C51—C5—C56−14.5 (3)N4—C51—C5—C52166.90 (16)
  3 in total

Review 1.  Pyrazolopyrimidines.

Authors:  C F George
Journal:  Lancet       Date:  2001-11-10       Impact factor: 79.321

2.  Synthesis and SAR of a new series of COX-2-selective inhibitors: pyrazolo[1,5-a]pyrimidines.

Authors:  C Almansa; A F de Arriba; F L Cavalcanti; L A Gómez; A Miralles; M Merlos; J García-Rafanell; J Forn
Journal:  J Med Chem       Date:  2001-02-01       Impact factor: 7.446

3.  Synthesis and antifungal properties of certain 7-alkylaminopyrazolo[1,5-a]pyrimidines.

Authors:  T Novinson; R K Robins; T R Matthews
Journal:  J Med Chem       Date:  1977-02       Impact factor: 7.446

  3 in total
  1 in total

1.  3-(2,4-Dichloro-phen-yl)-5-(4-fluoro-phen-yl)-2-phenyl-7-(trifluoro-meth-yl)pyrazolo-[1,5-a]pyrimidine.

Authors:  Ju Liu; Zhi-Qiang Cai; Yang Wang; Yu-Li Sang; Li-Feng Xu
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2012-05-31
  1 in total

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