Startseite Crystal structure of ethyl 1-benzyl-5-phenyl-1H-pyrazole-3-carboxylate, C19H18N2O2
Artikel Open Access

Crystal structure of ethyl 1-benzyl-5-phenyl-1H-pyrazole-3-carboxylate, C19H18N2O2

  • Wen-Chang Xu , Jin-Zong You , Qi Feng , Yi-Ping Zhang , Wan-Min Ni , Xu-Wen Huang , Tang-Qi Li , Sheng-Yue Tong und De-Qiang Qi EMAIL logo
Veröffentlicht/Copyright: 4. März 2017

Abstract

C19H18N2O2, triclinic, P1̅ (no. 2), a = 9.832(2) Å, b = 10.590(2) Å, c = 17.794(3) Å, α = 77.080(3)°, β = 81.720(4)°, γ = 64.958(3)°, V = 1633.7(5) Å3, Z = 4, Rgt(F) = 0.0634, wRref(F2) = 0.1964, T = 296 K.

CCDC no.: 1499592

One of the two independent molecules 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:Colourless block
Size:0.20 × 0.17 × 0.12 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:0.8 cm−1
Diffractometer, scan mode:Bruker SMART, φ and ω
2θmax, completeness:51°, >99%
N(hkl)measured, N(hkl)unique, Rint:9427, 6029, 0.034
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 3374
N(param)refined:417
Programs:Bruker programs [9], SHELX [10]
Table 2

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

AtomxyzUiso*/Ueq
C10.6289(3)0.2789(3)0.37972(15)0.0487(7)
C20.5534(3)0.4241(3)0.35759(16)0.0571(8)
H20.60560.48170.35060.068*
C30.4010(4)0.4844(4)0.34571(17)0.0695(9)
H30.35150.58200.33090.083*
C40.3228(4)0.4000(4)0.35581(18)0.0714(10)
H40.22030.44050.34830.086*
C50.3963(4)0.2562(4)0.37695(19)0.0748(10)
H50.34380.19890.38310.090*
C60.5479(3)0.1958(3)0.38920(17)0.0629(8)
H60.59660.09800.40400.075*
C70.7919(3)0.2085(3)0.39019(15)0.0462(7)
C80.8955(3)0.0861(3)0.36723(16)0.0517(7)
H80.87830.02980.33960.062*
C91.0317(3)0.0638(3)0.39400(15)0.0488(7)
C101.1760(3)−0.0560(3)0.38284(17)0.0542(7)
C111.4391(3)−0.1597(4)0.3965(2)0.0767(10)
H11A1.4304−0.25000.40720.092*
H11B1.5073−0.16400.43230.092*
C121.5017(4)−0.1362(4)0.3170(2)0.0969(13)
H12A1.4366−0.13590.28150.145*
H12B1.5995−0.21060.31140.145*
H12C1.5099−0.04660.30610.145*
C130.8159(3)0.3770(3)0.46425(15)0.0519(7)
H13A0.85970.35120.51380.062*
H13B0.70770.41100.47350.062*
C140.8536(3)0.4959(3)0.41503(14)0.0435(6)
C150.8987(3)0.4984(3)0.33803(15)0.0485(7)
H150.90570.42560.31460.058*
C160.9338(3)0.6085(3)0.29488(17)0.0544(7)
H160.96300.60930.24270.065*
C170.9256(3)0.7161(3)0.32888(19)0.0614(8)
H170.95080.78900.30020.074*
C180.8798(4)0.7151(3)0.40583(19)0.0646(9)
H180.87300.78780.42930.077*
C190.8440(3)0.6065(3)0.44799(17)0.0594(8)
H190.81270.60720.49980.071*
C200.4558(3)0.5797(3)0.13977(15)0.0453(6)
C210.5311(3)0.6646(3)0.14005(16)0.0561(8)
H210.47750.76240.13220.067*
C220.6825(3)0.6090(3)0.15148(17)0.0612(8)
H220.73000.66850.15160.073*
C230.7626(3)0.4642(3)0.16281(16)0.0609(8)
H230.86510.42550.17020.073*
C240.6917(3)0.3775(3)0.16325(16)0.0606(8)
H240.74630.27980.17110.073*
C250.5398(3)0.4337(3)0.15219(16)0.0556(8)
H250.49290.37340.15300.067*
C260.2928(3)0.6494(3)0.12913(15)0.0452(6)
C270.1893(3)0.7715(3)0.15393(16)0.0546(8)
H270.20700.82460.18350.066*
C280.0534(3)0.7984(3)0.12551(16)0.0524(7)
C29−0.0913(3)0.9190(3)0.1356(2)0.0652(9)
C30−0.3555(5)1.0308(4)0.1108(3)0.130(2)
H30A−0.43050.99200.12770.156*
H30B−0.35721.08690.14750.156*
C31−0.3773(9)1.1033(7)0.0442(3)0.294(6)
H31A−0.28261.08530.01540.441*
H31B−0.42661.20200.04730.441*
H31C−0.43931.07800.01870.441*
C320.2592(3)0.4907(3)0.04942(15)0.0507(7)
H32A0.36770.45130.04080.061*
H32B0.21590.5236−0.00060.061*
C330.2123(3)0.3761(3)0.09442(14)0.0429(6)
C340.2179(3)0.3381(3)0.17408(15)0.0502(7)
H340.24810.38690.20090.060*
C350.1798(3)0.2295(3)0.21418(17)0.0605(8)
H350.18500.20550.26760.073*
C360.1337(3)0.1559(3)0.17561(19)0.0637(8)
H360.10870.08200.20260.076*
C370.1253(4)0.1937(3)0.0967(2)0.0678(9)
H370.09300.14610.07010.081*
C380.1649(3)0.3028(3)0.05645(16)0.0561(8)
H380.15940.32690.00310.067*
N10.8698(2)0.2515(2)0.42923(12)0.0466(6)
N21.0173(2)0.1652(2)0.43166(12)0.0501(6)
N30.2126(2)0.6112(2)0.08842(12)0.0461(6)
N40.0663(3)0.7009(2)0.08561(13)0.0540(6)
O11.1868(2)−0.1508(2)0.35247(15)0.0855(8)
O21.2920(2)−0.0476(2)0.40866(12)0.0664(6)
O3−0.1091(2)1.0084(2)0.17138(15)0.0819(7)
O4−0.2016(3)0.9152(3)0.10171(18)0.1167(11)

Source of material

To a solution of ethyl 3-phenyl-1H-pyrazole-5-carboxylate (1.08 g, 5.24 mmol) and benzyl chloride (0.66 g, 5.24 mmol) in acetonitrile (25 mL) was added K2CO3 (0.72 g, 5.24 mmol). The mixture was refluxed for 5 h and the precipitate was evaporated to dryness under reduced pressure. The residue was purified by column chromatography on silica gel using ethyl acetate and petroleum ether (1:5, v/v), to obtain the target compound in 5.9% yield. Crystals were obtained by slow evaporation of methanol solution 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

Some pyrazoles are attractive five-membered nitrogen-containing compounds due to their fluorescence properties [1] and various biological activities [2], [3], [4], [5]. Much efforts have been made to the development of novel pyrazole compounds [6], [7], [8].

The asymmetric unit consists of two molecules. The bond lengths and angles are within normal ranges. The bond lengths of N1—C7 and N3—C26 are 1.367(3) and 1.369(3) Å, which are shorter than the C—N lengths (d(N1—C13) = 1.454(3) Å, d(N3—C32) = 1.459(3) Å), but longer than C = N lengths (d(N2—C9) = 1.338(3) Å, d(N4—C28) = 1.333(3) Å). The pyrazole ring (N1/N2/C9/C8/C7) and benzene ring (C1/C2/C3/C4/C5/C6) are not coplanar with a dihedral angle of 42.9°, while the dihedral angle between the pyrazole ring (N3/N4/C18/C27/C26) and benzene ring (C20/C21/C22/C23/C24/C25) in the crystallographically independent molecule is 36.2°. Summarizing the geometrical parameters of the title structure means, all bond lengths and angles are in the expected ranges.

Award Identifier / Grant number: 41503082

Funding statement: This work was supported by Project of Science and Technology Department of Zhejiang Province of China (Nos. 2017C33098 and 2016C31024) and the National Natural Science Foundation of China (No. 41503082).

References

1 Ciupa, A.; Mahon, M. F.; Paul, A.: Simple pyrazoline and pyrazole “turn on” fluorescent sensors selective for Cd2+ and Zn2+ in MeCN. Org. Biomol. Chem. 10 (2012) 8753–8757.10.1039/c2ob26608cSuche in Google Scholar PubMed

2 Zhao, B. X.; Zhang, L.; Zhu, X. S.; Wan, M. S.; Zhao, J.; Zhang, Y.; Zhang, S. L.; Miao, J. Y.: Synthesis and discovery of a novel pyrazole derivative as an inhibitor of apoptosis through modulating integrin β4, ROS, and p53 levels in vascular endothelial cells. Bioorg. Med. Chem. 16 (2008) 5171–5180.10.1016/j.bmc.2008.03.011Suche in Google Scholar PubMed

3 Saad, H. A.; Osman, N. A.; Moustafa, A. H.: Synthesis and analgesic activity of some new pyrazoles and triazoles bearing a 6,8-dibromo-2-methylquinazoline moiety. Molecules 16 (2011) 10187–10201.10.3390/molecules161210187Suche in Google Scholar PubMed PubMed Central

4 Tanitame, A.; Oyamada, Y.; Ofuji, K.; Fujimoto, M.; Iwai, N.; Hiyama, Y.; Suzuki, K.; Ito, H.; Terauchi, H.; Kawasaki, M.; Nagai, K.; Wachi, M.; Yamagishi, J.: Synthesis and antibacterial activity of a novel series of potent DNA gyrase inhibitors. Pyrazole derivatives. J. Med. Chem. 47 (2004) 3693–3696.10.1021/jm030394fSuche in Google Scholar

5 EI-Sabbagh, O. I.; Baraka, M. M.; Ibrahim, S. M.; Pannecouque, C.; Andrei, G.; Snoeck, R.; Balzarini, J.; Rashad, A. A.: Synthesis and antiviral activity of new pyrazole and thiazole derivatives. Eur. J. Med. Chem. 44 (2009) 3746–3753.10.1016/j.ejmech.2009.03.038Suche in Google Scholar PubMed

6 Qi, D. Q.; Yu, C. M.; You, J. Z.; Yang, G. H.; Wang, X. J.; Zhang, Y. P.: Synthesis, crystal structures, fluorescence and xanthine oxidase inhibitory activity of pyrazole-based 1,3,4-oxadiazole derivatives. J. Mol. Struct. 1100 (2015) 421–428.10.1016/j.molstruc.2015.07.067Suche in Google Scholar

7 Vijesh, A. M.; Isloor, A. M.; Shetty, P.; Sundershan, S.; Fun, H. K.: New pyrazole derivatives containing 1,2,4-triazoles and benzoxazoles as potent antimicrobial and analgesic agents. Eur. J. Med. Chem. 62 (2013) 410–415.10.1016/j.ejmech.2012.12.057Suche in Google Scholar PubMed

8 Ghorab, M. M.; Alsaid, M. S.; Ghabbour, H. A.: Crystal structure of ethyl-5-amino-1-(2,4-dinitrophenyl)-1H-pyrazole-4-carboxylate, C12H11N5O6. Z. Kristallogr. – NCS 231 (2016) 699–701.10.1515/ncrs-2015-0239Suche in Google Scholar

9 Bruker. APEX2, SAINT and SADABS. Brucker AXS Inc., Madison, Wisconsin, USA, (2009).Suche in Google Scholar

10 Sheldrick, G. M.: A short history of SHELX. Acta Crystallogr. A64 (2008) 112–122.10.1107/S0108767307043930Suche in Google Scholar PubMed

Received: 2016-8-31
Accepted: 2017-1-30
Published Online: 2017-3-4
Published in Print: 2017-5-24

©2017 Wen-Chang Xu et al., published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Artikel in diesem Heft

  1. Cover and Frontmatter
  2. Crystal structure of 2,5-diiodo-4-nitro-1H-imidazole hemihydrate, C6H4I4N6O5
  3. Crystal structure of catena-poly[μ2-2,2′-(1,3-phenylene)diacetato-κ4O,O′:O′′,O′′′)-(μ2-1,6-bis(2-methyl-1H-benzo[d]imidazol-1-yl)hexane-κ2N:N′)cadmium(II)], C32H34CdN4O4
  4. Crystal structure of poly[aqua-(2,2′-bipyridine-κN,N′)-(μ4-5,5′-(hexane-1,6-diyl)-bis(oxy)diisophthalato κ8O1,O2:O3,O4:O5,O6:O7,O8)manganese(II)], C21H21MnN2O7
  5. Crystal structure of poly-[(μ2-((1,3-bis(benzimidazol-1-yl)propane-κ2N:N′)(μ2-4-tert-butyl-phthalato-κ2O:O′)cobalt(II)] monohydrate, C29H30CoN4O5
  6. Crystal structure of 2-amino-4-(3,4,5-trimethoxy-phenyl)-5-(oxo-5,6,7,8-tetrahydro-4H-chromene)-3-carbonitrile – ethanol (1/1), C21H26N2O6
  7. Crystal structure of ethyl 1-benzyl-5-phenyl-1H-pyrazole-3-carboxylate, C19H18N2O2
  8. Crystal structure of 2-(1-benzyl-3-phenyl-1H-pyrazol-5-yl)-5-(4-nitrobenzylthio)-1,3,4-oxadiazole, C25H19N5O3S
  9. Structure and photochromism of 1,2-bis[2-methyl-5-(2-chlorophenyl)-3-thienyl]-3,3,4,4,5,5-hexafluorocyclopent-1-ene, C27H16Cl2F6S2
  10. The crystal structure of the Schiff base (E)-2,6-diisopropyl-N-(pyridin-4-ylmethylene)aniline, C18H22N2
  11. Crystal structure of (E)-2,4-dibromo-6-(((4-methyl-2-nitrophenyl)imino) methyl)phenol, C10H14Br2N2O3
  12. Crystal structure of (bis(2,2′-bipyridine-κ2N,N′))-(3,5-dinitrosalicylato-κ2O,O′)nickel(II), C27H18N6NiO7
  13. Crystal structure of 1-(diethoxy phosphonomethyl) 2-benzoyl-3-chloro-2-cyclohexen-1-ol, C18H24ClO5P
  14. Crystal structure of tetraaqua-bis(1,3-benzimidazol-3-ium-1,3-diacetato-κO)copper(II) hemihydrate, C22H27CuN4O12.50
  15. Crystal structure of 1α,11-dihydroxyeremophil-9-en-8-one, C15H24O3
  16. Crystal structure of 1-ferrocenylsulfonyl-1H-imidazo[4,5-b]pyridine, C16H13FeN3O2S
  17. Crystal structure of bis(μ2-azido-κ2N:N)-dichlorido-bis(μ2-2-(pyridin-2-yl)ethan-1-ol-κ2O,N)dicopper(II), C14H18Cl2Cu2N8O2
  18. Crystal structure of (5,15-cis-bis(2-hydroxy-1-naphthyl)-10-phenyl-20-(4-hydroxyphenyl)-porphyrinato)-(pyridine)-zinc(ii) pyridine solvate, C67H47N7O3Zn
  19. Crystal structure of (μ2-[2,2′-bis(diphenylphosphino)-1,1′-binaphthalene oxide-κ2O,P])-iodido copper(I), C44H32CuIOP2
  20. Crystal structure of 6,8-diphenyl-2-(4-fluorophenyl)-2,3-dihydroquinolin-4(3H)-one, C27H20FNO
  21. Crystal structure of 5,11,17,23-tetra(tert-butyl)-25,26,27,28-tetrahexoxycalix[4]arene, C68H104O4
  22. Crystal structure of N,N′–bis(pyridin-4-ylmethyl)pyrazine-2,3-dicarboxamide dihydrate, C18H20N6O4
  23. Crystal structure of a diaqua-bis(3,5-di(1H-imidazol-1-yl)pyridine-κN)-bis(2-(4-carboxy-phenyl)acetato-κO]manganese(II), C40H36MnN10O10
  24. Crystal structure of 4-(4-hydroxy-3-methoxy-phenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydro-quinoline-3-carboxylic acid methyl ester, C21H25NO5
  25. Crystal structure of (E)-4,4′-(ethene-1,2-diyl)bis(3-nitrobenzoic acid) 1.5 hydrate, C16H13N2O9.5
  26. Crystal structure of (E)-2-(5-(4-fluorophenyl)-3-(furan-2-yl)-4,5-dihydro-1H-pyrazol-1-yl)-5-((4-fluorophenyl)diazenyl)-4-methylthiazole, C23H17F2N5OS
  27. Crystal structure of the co-crystalline adduct 4-((4,4-dimethyl-2,6-dioxocyclohexylidene)methylamino)-N-(4,6-dimethylpyrimidin-2-yl)benzenesulfonamide - acetic acid (1/1), C21H24N4O4S ⋅ C2H4O2
  28. Synthesis and crystal structure of 2-((5-chlorobenzo[c][1,2,5]thiadiazol-4-yl)amino)-4,5-dihydro-1H-imidazol-3-ium tetraphenylborate, C33H29BClN5S
  29. Crystal structure of (4-chlorophenyl)(3-ferrocenyl-5-(trifluoromethyl)-1H-pyrazol-1-yl)methanone, C21H14ClF3FeN2O
  30. Crystal structure of (S)-benzyl 3-(benzylcarba-moyl)-3,4-dihydroisoquinoline-2(1H)-carboxylate, C25H24N2O3
  31. Crystal structure of 5-acetyl-3-(3-fluoro-4-morpholinophenyl)oxazolidin-2-one, C15H17FN2O4
  32. Crystal structure of 2-(4-fluorophenyl)-1,3-dimethyl-1H-perimidin-3-ium iodide, C19H16FIN2
  33. Crystal structure of methyl 1H-indole-2-carboxylate, C10H9NO2
  34. Crystal structure of 2,3-diphenyl-1-[(dipropylamino)acetyl]-1,3-diazaspiro[4.5]decan-4-one, C28H37N3O2
  35. Crystal structure of 1-(2H-1,3-benzodioxol-5-yl)-3-(1H-imidazol-1-yl)propan-1-one, C13H12N2O3
  36. Crystal structure of 2,9-dibromo-1,10-phenanthroline, C12H6Br2N2
  37. Crystal structure of 3-(adamantan-1-yl)-4-(4-fluorophenyl)-1H-1,2,4-triazole-5(4H)-thione, C18H20FN3S
  38. Crystal structure of trans-bis((E)-7-oxo-4-(phenyldiazenyl)cyclohepta-1,3,5-trien-1-olato)-κ2O,O′)-bis(pyridine-κN)cobalt(II), C36H28CoN6O4
  39. Crystal structure of 2-(4-methyl-3-phenylthiazol-2(3H)-ylidene)malononitrile, C13H9N3S
  40. Crystal structure of (Z)-3-(adamantan-1-yl)-1-(3-chlorophenyl)-S-benzylisothiourea, C24H27ClN2S
  41. Crystal structure of chlorido{[3-(η5-cyclopenta-dienyl)-2,2,3-trimethyl-1-phenylbutylidene] azanido-κN}[η2(N,O)-N,N-dimethylhydroxylaminato]titanium(IV), C20H27ClN2OTi
  42. Crystal Structure of 1,1′-dimethyl-[4,4′-bipyridine]-1,1′-diium tetrachloridozincate(II), C12H14Cl4N2Zn
  43. Crystal structure of 5-nitro-2-(pyrrolidin-1-yl)benzaldehyde, C11H12N2O3
  44. Crystal structure of 2,3-diphenyl-1-(morpholin-4-ylacetyl)-1,3-diazaspiro[4.5]decan-4-one, C26H31N3O3
  45. Crystal structure of 3,3-dimethyl-3,4-dihydro-1H-benzo[c]chromene-1,6(2H)-dione, C15H14O3
  46. Crystal structure of bis(2-(2-hydroxymethyl)pyridine-κ2N,O)-bis(pivalato-κO)nickel(II), C22H32N2NiO6
  47. Crystal structure of (1,10-phenanthroline-κ2N,N′)-bis(1H-pyrazole-3-carboxylato-κ2N,O)manganese(II) trihydrate, C20H20N6O7Mn
  48. The crystal structure of 3-aminopropan-1-aminium iodide, C3H11N2I
  49. Crystal structure of ethyl 1-(4-chlorophenyl)-5-methyl-1H-1,2,3-triazole-4 carboxylate, C12H12ClN3O2
  50. Crystal structure of 4,4′-((1Z,1′Z)-2,2′-(2,5-diethoxy-1,4-phenylene)bis(ethene-2,1-diyl))dipyridine, C24H24N2O2
  51. Crystal structure of (16S)-12,16-epoxy-11,14-dihydroxy-17(15/16)-abeo-3a,18-cyclo-8,11,13-abietatrien-7-one, C20H24O4
  52. Crystal structure of aquadichlorido(2,4,6-tri-2-pyridyl-1,3,5-triazine-κ3N,N′,N′′)nickel(II) monohydrate, C18H16Cl2N6NiO2
  53. Crystal structure of catena-poly[dichlorido-(μ-ethane-1,2-diyl-bis-(pyridyl-4-carboxylate-κN:N′)mercury(II)], C15H14Cl2HgN2O4
  54. Crystal structure of methyl 2-acetamido-5-chlorbenzoate, C10H10ClNO3
  55. Crystal structure of tetrakis(μ2-3,3-dimethylacrylato-κ2O,O′)-bis(2-aminopyrimidine-κN) dicopper(II), C28H38Cu2N6O8
  56. Crystal structure of 3-amino-8-methoxy-1-phenyl-1H-benzo[f]chromene-2-carbonitrile, C21H16N2O2
  57. Crystal structure of 4-(2-ammonioethyl)morpholin-4-ium dichloride monohydrate, C6H18Cl2N2O2
  58. Crystal structure of 1-(3-((5-bromo-2-hydroxybenzylidene)amino)phenyl)ethanone O-benzyl oxime, C22H19BrN2O2
  59. Crystal structure of 2-(4-(dimethylamino)-2-fluorophenyl)-1,3-bis(1H-1,2,4-triazol-1-yl)propan-2-ol monohydrate, C15H20FN7O2
  60. Crystal structure of 4-bromo-2-(1H-pyrazol-3-yl)phenol, C9H7BrN2O
  61. Crystal structure of 1,2,3,4,5-pentamethyl-1,3-cyclopentadiene, C10H16
Heruntergeladen am 1.10.2025 von https://www.degruyterbrill.com/document/doi/10.1515/ncrs-2016-0261/html
Button zum nach oben scrollen