Startseite Naturwissenschaften Crystal structure of ethyl 1-(4-fluorobenzyl)-3-phenyl-1H-pyrazole-5-carboxylate, C19H17FN2O2
Artikel Open Access

Crystal structure of ethyl 1-(4-fluorobenzyl)-3-phenyl-1H-pyrazole-5-carboxylate, C19H17FN2O2

  • Sheng-Yue Tong , Jin-Zong You , Yi-Ping Zhang , Zhen-Zhen Wang , Ke-Ji Yu , Qiong Hu , Hui-Juan Pan , Cheng-Jie Wu und De-Qiang Qi EMAIL logo
Veröffentlicht/Copyright: 7. Februar 2018

Abstract

C19H17FN2O2, triclinic, P1̅ (no. 2), a = 7.8593(19) Å, b = 10.3322(18) Å, c = 10.9747(19) Å, α = 108.914(18)°, β = 92.931(3)°, γ = 99.544(3)°, V = 826.1(3) Å3, Z = 2, Rgt(F) = 0.0431, wRref(F2) = 0.1170, T = 296.15 K.

CCDC no.: 1817865

The crystal structure is shown in the figure. Tables 1 and 2 contain details on crystal structure and measurement conditions and a list of the atoms including atomic coordinates and displacement parameters.

Table 1:

Data collection and handling.

Crystal:Block, colorless
Size:0.28 × 0.24 × 0.16 mm
Wavelength:Mo radiation (0.71073 Å)
μ:0.09 mm−1
Diffractometer, scan mode:Bruker P4, φ and ω-scans
θmax, completeness:27,5°, >92% (>99% up to 25°)
N(hkl)measured, N(hkl)unique, Rint:6650, 3524, 0.014
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 2739
N(param)refined:218
Programs:Bruker programs [1], SHELX [2, 3]
Table 2:

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).

AtomxyzUiso*/Ueq
F1−0.01323(14)−0.58034(13)−0.21251(12)0.0901(4)
O1−0.64722(14)−1.23471(11)−0.23397(10)0.0546(3)
O2−0.65599(16)−1.09658(12)−0.35449(10)0.0631(3)
N1−0.74054(15)−0.89038(12)−0.12490(11)0.0445(3)
N2−0.78245(15)−0.82174(12)−0.00687(11)0.0478(3)
C1−0.1830(2)−0.63934(18)−0.21325(18)0.0607(4)
C2−0.2740(2)−0.72360(17)−0.32873(15)0.0565(4)
H2−0.2223−0.7409−0.40530.068*
C3−0.4450(2)−0.78248(16)−0.32874(14)0.0511(4)
H3−0.5088−0.8409−0.40640.061*
C4−0.52324(19)−0.75619(14)−0.21538(13)0.0456(3)
C5−0.7127(2)−0.81596(16)−0.21714(15)0.0515(4)
H5A−0.7774−0.7409−0.19660.062*
H5B−0.7572−0.8794−0.30370.062*
C6−0.78467(16)−0.91048(14)0.05959(13)0.0418(3)
C7−0.74270(17)−1.03579(14)−0.01670(13)0.0434(3)
H7−0.7356−1.11360.00690.052*
C8−0.71420(17)−1.01971(14)−0.13383(13)0.0418(3)
C9−0.66953(18)−1.11765(15)−0.25349(13)0.0450(3)
C10−0.6040(2)−1.34105(16)−0.34517(15)0.0589(4)
H10A−0.4985−1.3049−0.37510.071*
H10B−0.6972−1.3712−0.41560.071*
C11−0.5793(3)−1.45924(19)−0.3017(2)0.0777(5)
H11A−0.5523−1.5329−0.37310.117*
H11B−0.6840−1.4930−0.27100.117*
H11C−0.4857−1.4283−0.23300.117*
C12−0.82513(17)−0.86888(15)0.19470(13)0.0447(3)
C13−0.8751(2)−0.74226(17)0.25307(16)0.0572(4)
H13−0.8883−0.68380.20560.069*
C14−0.9056(2)−0.7029(2)0.38276(17)0.0695(5)
H14−0.9373−0.61740.42200.083*
C15−0.8892(2)−0.7896(2)0.45337(17)0.0704(5)
H15−0.9096−0.76250.53990.084*
C16−0.8429(2)−0.9155(2)0.39602(16)0.0663(5)
H16−0.8329−0.97450.44340.080*
C17−0.8108(2)−0.95507(17)0.26763(15)0.0549(4)
H17−0.7791−1.04080.22950.066*
C18−0.4251(2)−0.67022(18)−0.10037(15)0.0623(4)
H18−0.4756−0.6519−0.02330.075*
C19−0.2534(2)−0.6114(2)−0.09867(18)0.0722(5)
H19−0.1876−0.5542−0.02140.087*

Source of material

A mixture of methyl 3-phenyl-1H-pyrazole-5-carboxylate (2.02 g, 0.01 mol), 1-(chloromethyl)-4-fluorobenzene (1.44 g, 0.01 mmol) and K2CO3 (1.38 g, 0.01 mmol) in acetonitrile (25 mL) was refluxed for 3 h. The resulting solution was concentrated by vacuum evaporation and the residue was purified by column chromatography on silica gel using ethyl acetate and petroleum ether (1:5, v/v) as eluent, to obtain the target compound in 78% yields. Crystals suitable for X-ray diffraction were obtained by slow evaporation of a solution in ethanol at room temperature.

Experimental details

All H atoms were placed in idealized positions and treated as riding on their parent atoms, with d(C—H) = 0.96 (methyl) and 0.97 Å (methylene), Uiso(H) = 1.5Ueq(C) and d(C—H) = 0.93 Å (aromatic), Uiso(H) = 1.2Ueq(C).

Discussion

In recent years, much effort has been focused on the pyrazole derivatives due to their wide range of biological properties such as antiviral, anti-bacterial, anti-inflammatory, analgesic activities [4], [5], [6], [7]. Pyrazoles were also found to possess inhibitory activities against xanthine oxidase, cyclooxygenase, and alkaline phosphatases [8], [9], [10]. The modification of pyrazole such as substituent moiety should provide potential biological activities [11, 12] . In continuation of interest in the development of pyrazole derivatives, we report here the crystal structure of ethyl 1-(4-fluorobenzyl)-3-phenyl-1H-pyrazole-5-carboxylate.

In the title crystal structure, all bond lengths and angles are within normal ranges [13]. The pyrazole ring (N1/N2/C9/C8/C7) and the aryl ring (C1/C2/C3/C4/C5/C6) are almost coplanar with a dihedral angle of 6.0°. The dihedral angle between the pyrazole ring (N1/N2/C9/C8/C7) and the aryl moiety (C12/C13/C14/C15/C16/C17) is 81.9°. The two aryl moieties are twisted by an angle of 87.3°.

Acknowledgements

This work was supported by Project of Science and Technology Department of Zhejiang Province of China (no. 2017C33098).

References

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Received: 2017-9-4
Accepted: 2018-1-18
Published Online: 2018-2-7
Published in Print: 2018-3-28

©2018 Sheng-Yue Tong et al., published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Artikel in diesem Heft

  1. Cover and Frontmatter
  2. Crystal structure and optical properties of diaqua-tris(nitrato-κ2O,O′)-bis(4,4,5,5-tetramethyl-2-(p-pyridyl)imidazoline-1-oxyl 3-oxide-κN)praseodymium(III), C24H36N9O15Pr
  3. Crystal structure of dimethanol-bis(μ2-methanol-κ2O:O)-bis{3-((4-methoxy-2-oxidobenzylidene)amino)-2-oxo-2H-chromen-4-olato-κ3O,N,O′}dimanganese(II), C38H38Mn2N2O14
  4. Crystal structure of catena-poly[diaqua-bis(μ2-2-(2-((2,6-dichlorophenyl)amino)phenyl)acetato-κ3O,O′:O′)calcium(II)], C56H48N4Ca2Cl8O12
  5. Crystal structure of catena-poly[triaqua-(isophthalato-κO)-(μ2-1,6-di(1H-imidazol-1-yl)hexane-κ2N:N′)]nickel(II), C20H28N4NiO7
  6. Crystal structure of cyclo[hexaqua-bis[1-[(2-ethyl-1H-imidazol-1-yl) methyl]-1H-benzotriazole-κ2N:N′]-bis(sulfato-κ1O)dicadmium(II)] monohydrate, C24H42Cd2N10O16S2
  7. Crystal Structure of bis(2-fluorbenzoato-κO)-bis(1,10-phenanthroline-κ2N,N′)manganese(II) dihydrate, C38H28F2MnN4O6
  8. Crystal structure of tetrapropylammonium 5-hydroxyisophthalate tetrahydrate, C20H41NO9
  9. Crystal structural of 2-amino-4-(3-bromophenyl)-3-cyano-7,7-dimethyl-5-oxo-4H-5,6,7,8-tetrahydrobenzo[b]pyran, C18H17BrN2O2
  10. Crystal structural of 2-amino-4-(4-methoxyphenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile, C17H16N2O3
  11. Crystal structure of catena-poly[aqua(μ2-1,3-bis(1H-benzo[d]imidazol-1-yl)propane-κ2N:N′)-(μ2-5-(tert-butyl)isophthalate-κ3O,O′:O′′)nickel(II)], C29H30N4NiO5
  12. Crystal structure of catena-poly[(μ2-dicyanamido-κ2N:N′)-(μ2-2-(pyridin-2-yl)ethan-1-olato-κ3N,O:O′)copper(II)], C9H8CuN4O
  13. Crystal structure of bis(5,5′-((butane-1,4-diylbis(azanylylidene))bis(methanylylidene))bis(3-(ethoxycarbonyl)-2,4-dimethylpyrrol-1-ido-k4N,N′,N′′,N′′′)copper(II), C24H32CuN4O4
  14. The crystal structure of the formamide solvate of (17b)-estra-1,3,5(10)-triene-3,17diol, C19H27NO3
  15. Crystal structure of catena-poly[diaqua-bis(μ2-1H-benzo[d]imidazole-5-carboxylato-κ2N:O)nickel(II)] dihydrate, C16H18N4NiO8
  16. Crystal structure of dibromido[(1,2-bis(diisopropylphosphino)-1,2-dicarba-closo-dodecaborane-κ2P,P′]nickel(II), C14H38B10NiBr2P2
  17. The crystal structure of catena-poly[aquachlorido(3,3′-([4,4′-bipyridine]-1,1′-diium-1,1′-diylbis(methylene))dibenzoato-κ2O:O′)copper(II)] chloride dihydrate, C26H26Cl2CuN2O7
  18. The crystal structure of N′-(2-nitrobenzylidene)-2-phenylacetohydrazide, C15H13N3O3
  19. Crystal structure of dichlorido bis[1-[(2-methyl-1H-benzoimidazol-1-yl)methyl]-1H-benzotriazole-κ1N]cadmium(II), C30H26CdCl2N10
  20. Crystal structure of aqua-bis(3-(2-pyridyl)-5-(4-pyridyl)-1H-1,2,4-triazole-κ2N,N′)copper(II) sulfate tetrahydrate, C24H28CuN10O9S
  21. Crystal structure of dibromido-carbonyl-(η6-p-cymene)osmium(II), C11H14Br2OOs
  22. Crystal structure of catena-poly[chlorido-(μ2-chlorido)-bis(imidazole-κN)copper(II)] C6H8Cl2CuN4
  23. Crystal structure of [(1,2-bis(dicyclohexylphosphino)-1,2-dicarba-closo-dodecaborane-κ2P,P′]dibromidonickel(II)), C26H54B10NiBr2P2
  24. Crystal structure of dichlorido[1,1′-bis(diphenylphosphanyl)ferrocene-κ2P,P′]zinc(II), C34H28FeCl2P2Zn
  25. Crystal structure of tris(μ2-2-(pyridin-2-yl)ethan-1-olato-κ3N,O:O)-trithiocyanato-κN-dicobalt(III), C24H24Co2N6O3S3
  26. The crystal structure of diaqua-2,2′-((cyclohexane-1,2-diylbis(azanylylidene))bis(methanylylidene))diphenolato-κ4N,N′,O,O′)manganese(III) perchlorate, C20H24MnClN2O4
  27. Crystal structure of bis(μ3-chlorido)-bis(μ2-chlorido)-tetrakis(μ2-2,6-bis (diphenylmethyl)-4-t-butylphenolato)tetralithium(I)dicobalt(II) toluene solvate, C75.5H70Cl2CoLi2O2
  28. The crystal structure of hexaaqua-bis(μ2-3-(3-(pyridin-4-yl)-1,2,4-oxadiazol-5-yl)propanoato-κ2O:O′)-tetrakis(3-(3-(pyridin-4-yl)-1,2,4-oxadiazol-5-yl)propanoato-κO)dierbium(III) octahydrate, C60H76N18O32Er2
  29. Crystal structure of dimethylammonium bis(naphthalene-2,3-diolato)borate, C22H20BNO4
  30. Crystal structure of 2-amino-4-(4-nitro-phenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile, C18H17N3O4
  31. The crystal structure of (E)-4-chloro-2-(((5-methylpyridin-2-yl)imino)methyl)phenol, C13H11ClN2O
  32. Crystal structure of bis(N,N,N-trimethylbutanaminium) poly[heptaselenidotristannate(IV)], C14H36N2Se7Sn3
  33. The crystal structure of N-((3,5-di-tert-butyl-4-hydroxyphenyl)(phenyl)methyl)-4-methylbenzenesulfonamide, C28H35N3S
  34. Crystal structure of 2-(4-chlorophenyl)-2,3-dihydro-1H-perimidine, C17H13Cl1N2
  35. The Crystal structure of 2-iodo-1-(p-tolyl)propan-1-one, C10H11IO
  36. Crystal structure of ethyl 1-(4-bromobenzyl)-3-phenyl-1H-pyrazole-5-carboxylate, C19H17BrN2O2
  37. Crystal structure of ethyl 1-(4-fluorobenzyl)-3-phenyl-1H-pyrazole-5-carboxylate, C19H17FN2O2
  38. Crystal structure of catena-poly[diaqua-(μ2-2,5-dihydroxyterephthalato-κ4O,O′:O′′,O′′′)cadmium(II)], C8H8O8Cd
  39. Crystal structure of tetraaqua-bis[6-(1H-imidazol-1-yl-κN)nicotinato]zinc(II), C18H20N6O8Zn
  40. Crystal structure of dichlorido-bis(N-phenyl-2-(quinolin-8-yloxy)acetamide-κ2N,O) – acetone (2/1), C35.5H31N4O4.5Cl2Cu
  41. Crystal Structure of ethyl (E)-3,4-dimethyl-5-((2-(4-methylbenzoyl)hydrazono)methyl)-1H-pyrrole-2-carboxylate — water — ethanol (1/1/1), C20H29N3O5
  42. Crystal structure of 5-((4-(1H-benzo[d]imidazol-2-yl)-2-methoxyphenoxy)methyl)-2-chlorothiazole - trichloromethane - methanol (1/1/1), C20H19Cl4N3O3S
  43. The crystal structure of a matrine derivative: 41S,7aS,12S,13aR,13bR)-12-(4-methylpiperazin-1-yl)dodecahydro-1H,5H,10H-dipyrido[2,1-f:3′,2′,1′-ij][1,6]naphthyridin-10-one, C20H34N4O
  44. Crystal structure of cesium beryllophosphate, Be3Cs2P4O14
  45. Crystal Structure of 3-((3-hydroxybenzyl)ammonio)-3-phenylpropanoate, C16H17NO3
  46. Crystal structure of 9,10-dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium chloride — 4-hydroxy-3-methoxybenzoic acid — water (2/1/5), C48H54N2Cl2O17
  47. The crystal structure of (1R, 2R)-N1,N2-diferrocenyl-1,2-cyclohexanedicarboxamide, C28H30Fe2N2O2
  48. Crystal structure of N-(2-methylphenyl)ethoxycarbothioamide, C10H13NOS
  49. Crystal Structure of ethyl (E)-2,4-dimethyl-5-((2-tosylhydrazono)methyl)-1H-pyrrole-3-carboxylate monohydrate, C17H23N3O5
  50. Crystal structure of Diiodo-(N′-((quinolin-8-yl)methylene)isonicotinohydrazide κ3N,N′,O)cadium(II) – dimethylformamide (1/1), C19H19N5O2CdI2
  51. Crystal structure of dinitrato-(N′-((quinolin-8-yl)methylene)isonicotinohydrazide κ3-N,N′,O)copper(II), C16H12N6O7Cu
  52. Crystal structure of benzoato-κO-bis(1,3,5-triaza-7-phosphaadamantane-κP)silver(I) monohydrate C19H31AgN6O3P2
  53. Crystal structure of (E)-2-(anthracen-9-ylmethylene)hydrazine-1-carbothioamide, C16H13N3S
  54. The crystal structure of 8-chloro-7-ethyl-1,3-dimethyl-1H-purine-2,6(3H,7H)-dione, C9H11ClN4O2
  55. Crystal structure of {5,5′-((propane-1,3-diylbis(azanylylidene))bis(methanylylidene))bis(3-(ethoxycarbonyl)-2,4-dimethylpyrrol-1-ido)-κ4N,N′,N′′,N′′′}zinc(II), C23H30N4O4Cu
  56. Crystal structure of bis(4-dimethylamino-pyridin-1-ium)tetrafluorosuccinate, C18H22F4N4O4
  57. Crystal structure of dimethyl 3,9-dibenzyl-6,12-dicyclohexyl-3,9-diazahexacyclo [6.4.0.02,7.04,11.05,10]-dodecane-1,11-dicarboxylate, C40H50N2O4
  58. Crystal structure of diethyl 3,9-diphenyl-6,12-bis(3-methoxyphenyl)-3,9-diazahexacyclo[6.4.0.02,7.04,11.05,10]dodecane-1,11-dicarboxylate, C42H42N2O6
  59. Crystal structure of bis(acetato-κO)-bis(1-(pyridin-2-yl)ethan-1-one oxime-κ2N,N′)nickel(II), C18H22N4NiO6
  60. Crystal structure of (N-(3-ethoxy-2-oxidobenzylidene)-4-fluorobenzohydrazonato-κ3N,O,O′)-diphenyltin(IV), C28H23FN2O3Sn
  61. Crystal structure of {N-(3-ethoxy-2-oxidobenzylidene)-4-fluorobenzohydrazonato-κ3O,N,O′}dimethyltin(IV), C18H19FN2O3Sn
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