Startseite Crystal structure of 1-(p-tolylphenyl)-4-(2-furoyl)-3-methyl-1H-pyrazol-5-ol, C16H14N2O3
Artikel Open Access

Crystal structure of 1-(p-tolylphenyl)-4-(2-furoyl)-3-methyl-1H-pyrazol-5-ol, C16H14N2O3

  • Qiong Wu , Zhen-Yu Huang , Yun-Xin Liu , Heng-Qiang Zhang ORCID logo , Tong-Yin Jin EMAIL logo , Yu-Na Xue und Chang Liu
Veröffentlicht/Copyright: 20. Februar 2024

Abstract

C16H14N2O3, monoclinic, P21/n (no. 14), a = 4.9621(10) Å, b = 11.828(2) Å, c = 23.727(5) Å, β = 94.527(4)°, V = 1388.2(5) Å3, Z = 4, R gt (F) = 0.0551, wR ref (F2) = 0.1847, T = 296(2) K.

CCDC no.: 2331007

Table 1 contains crystallographic data and Table 2 contains the list of the atoms including atomic coordinates and displacement parameters.

Table 1:

Data collection and handling.

Crystal: Yellow block
Size: 0.22 × 0.20 × 0.18 mm
Wavelength: Mo Kα radiation (0.71073 Å)
μ: 0.10 mm−1
Diffractometer, scan mode: Xcalibur, eos, gemini
θmax, completeness: 27.5°, >99 %
N(hkl)measured, N(hkl)unique, Rint: 8692, 3201, 0.046
Criterion for Iobs, N(hkl)gt: Iobs > 2σ(Iobs), 1724
N(param)refined: 193
Programs: CrysAlisPRO [1], SHELX [2], WinGX/ORTEP [3], PLATON [4]
Table 2:

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

Atom x y z Uiso*/Ueq
C1 −0.0413 (6) 0.3034 (3) −0.07808 (11) 0.0708 (8)
H1A −0.212469 0.301138 −0.061867 0.106*
H1B −0.037049 0.246108 −0.106673 0.106*
H1C −0.016884 0.376295 −0.094681 0.106*
C2 0.1817 (5) 0.2823 (2) −0.03271 (10) 0.0560 (7)
C3 0.2785 (6) 0.3672 (2) 0.00323 (12) 0.0670 (8)
H3 0.204320 0.439193 −0.001124 0.080*
C4 0.4822 (5) 0.3490 (2) 0.04558 (11) 0.0631 (8)
H4 0.538539 0.407544 0.069891 0.076*
C5 0.6009 (5) 0.2442 (2) 0.05161 (10) 0.0470 (6)
C6 0.5079 (6) 0.1575 (2) 0.01628 (12) 0.0709 (9)
H6 0.584543 0.085883 0.020315 0.085*
C7 0.3006 (6) 0.1770 (2) −0.02513 (12) 0.0731 (9)
H7 0.239611 0.117661 −0.048499 0.088*
C8 0.9559 (5) 0.2950 (2) 0.12885 (9) 0.0454 (6)
C9 1.1584 (5) 0.23178 (18) 0.16073 (9) 0.0445 (6)
C10 1.1187 (5) 0.11829 (19) 0.14008 (10) 0.0471 (6)
C11 1.2731 (6) 0.0123 (2) 0.15447 (12) 0.0664 (8)
H11A 1.194115 −0.049335 0.132633 0.100*
H11B 1.266723 −0.003782 0.194003 0.100*
H11C 1.457789 0.021925 0.146025 0.100*
C12 1.3334 (4) 0.2926 (2) 0.20037(9) 0.0468 (6)
C13 1.5466 (5) 0.2486 (2) 0.23858 (10) 0.0482 (6)
C14 1.7204 (5) 0.3037 (2) 0.27496 (11) 0.0638 (8)
H14 1.726344 0.381412 0.280863 0.077*
C15 1.8910 (6) 0.2236 (3) 0.30243 (12) 0.0710 (8)
H15 2.031200 0.237518 0.329922 0.085*
C16 1.8144 (6) 0.1248 (3) 0.28179 (13) 0.0757 (9)
H16 1.894076 0.056166 0.292658 0.091*
N1 0.8136 (4) 0.22280 (15) 0.09398 (8) 0.0465 (5)
N2 0.9161 (4) 0.11290 (16) 0.10102 (8) 0.0511 (5)
O1 0.9127 (4) 0.40260 (14) 0.13126 (8) 0.0627 (5)
H1 1.022698 0.431283 0.154615 0.094*
O2 1.3003 (4) 0.40023 (15) 0.20366 (8) 0.0675 (6)
O3 1.6004 (4) 0.13670 (16) 0.24193 (8) 0.0725 (6)

1 Source of material

All reagents were obtained from commercial sources and used without further purification. 3-methyl-1-p-tolyl-5-pyrazolone was synthesized according to the method proposed by Jensen (1959) (yield 78.6 %; m.p. 402–403 K). 3–methyl-1-p-tolyl-5-pyrazolone (5 g) was dissolved in dioxane (100 mL) by warming and Ca(OH)2 (3 g), added. 2-Furoyl chloride (5 mL) was next added, drop by drop, with stirring within 3 min. After refluxing gently for 1 h, the orange mixture was cooled and poured with stirring into chilled 2 M HCl (450 mL). A handful of ice-salt mixture was added and vigorous stirring continued for another 30 min, after which, the reaction mixture was kept in a refrigerator until crystallisation occurred. Filtration of the product gave 76 % yield of light yellow crystals at room temperature.

2 Experimental details

The hydroxyl H atom was located in a difference Fourier map and refined as riding, with O–H distance restraint of 0.82(1) A° and with Uiso(H) = 1.5 Ueq(O). Other H atoms were placed in calculated positions, with C–H = 0.93 for phenyl and furan, and refined as riding, with Uiso(H) = 1.2 Ueq(C) for phenyl H and 1.5 Ueq(C) for methyl H.

3 Comment

The 4-heterocyclic acylpyrazolones are an interesting class of β-diketones, containing a pyrazole-bearing chelating arm [5]. Such 4-heterocyclic acylpyrazolones derivatives were found to be useful as NMR shift-reagents [6], and it is also important in understanding the behavior of these compounds in the vapor phase, the mechanisms of pharmacological activities and physiological activities [7]. Moreover, they can coordinate with metal to generate complexes [8, 9]. Although there have been numerous reports on acylpyrazolones, few 4-heterocyclic acylpyrazolone compounds have been reported so far [10, 11].

The structure of the title compound is shown in figure. The p-tolylphenyl ring is slightly twisted by 6.23(6)° with respect to the pyrazolone ring, whereas the furyl rings make dihedral angles of 4.40(5)° with the pyrazolone. Atom O1 has a partial anionic character, as shown by the lengthening of the C8=O1 bond [1.293(3) Å] and this atom acts as hydrogen-bond acceptor. The intermolecular O1–H1⋯O2 hydrogen bond results in the formation of a dimer with an R22(12) graph-set motif [12]. It is apparent that the C12=O2 and C9=C12 distances correspond to double bonds. The conjugation effects also cause the pyrazolone and C2–C7 benzene ring to be nearly coplanar, with a mean deviation from the overall plane of 0.002 Å. Atoms O1, C8, C9, C12 and O2 are essentially coplanar, the largest deviation from the mean plane being 0.009 Å for C12. The clear presence of the hydroxyl H atom in the difference Fourier synthesis and the absence of any residual electronic density in the vicinity of O1 confirm that the title compound crystallizes as a pure hydroxyl tautomer and that no desmotropism is present [13]. All geometric parameters are in the expected ranges [14].


Corresponding author: Tong-Yin Jin, Department of Chemistry, Hebei Normal University for Nationalities, Chengde 067000, People’s Republic of China, E-mail:

  1. Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: Introduces Foreign Intelligence Projects of Hebei Province (No. 130800) and the Hebei Education Department Science Foundation (No. QN2018313) and Science Foundation of Hebei Normal University for Nationalities (No. 2018005) for their support.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2024-01-01
Accepted: 2024-02-05
Published Online: 2024-02-20
Published in Print: 2024-04-25

© 2024 the author(s), published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution 4.0 International License.

Artikel in diesem Heft

  1. Frontmatter
  2. New Crystal Structures
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  5. The crystal structure of valinyl-N-ium-4-(5-(thiophen-2-yl)isoxazol-3-yl)phenyl trifluoroacetate
  6. Crystal structure of bis(3,5-diisopropyl-1H-pyrazol-4-ammonium) tetrafluoroterephthalate, 2[C9H18N3][C8F4O4]
  7. Crystal structure of aqua-octakis(μ3-salicylato)-(1,10-phenanthroline)-(acetonitrile)-dicobalt(II)-trititanium(IV), C70H45N3O25Co2Ti3
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  10. Crystal structure of (Z)-4-((4,5,6-trimethoxy-3-oxobenzofuran-2(3H)-ylidene)methyl)phenyl diphenylphosphinate, C30H25O7P
  11. Crystal structure of 3-((5-methylpyridin-2-yl)amino)-1-phenylpropan-1-one, C15H16N2O
  12. The crystal structure of (R)-9-(5-methoxy-2-methyl-2,3-dihydro-1H-cyclopenta[a]naphthalen-1-ylidene)-9H-thioxanthene, C28H22OS
  13. Crystal structure of diaqua-bis[1-(1-(hydroxymethyl)-1H-pyrazol-3-yl)-5-methyl-1H-1,2,3-triazole-4-carboxylato-κ2N,O)] manganese(II), C16H20MnN10O8
  14. The crystal structure of t-butyl 7-[4-(4-fluorophenyl)-2-[(methanesulfonyl)(methyl)amino]-6-(propan-2-yl)pyrimidin-5-yl]-3,5-dihydroxyhept-6-enoate, C26H36FN3O6S
  15. The crystal structure of samarium sulfate pentahydrate, Sm2(SO4)3(H2O)5
  16. The crystal structure of [triaqua-(8-carboxymethoxy-quinoline-2-carboxylate-κ 4 N,O,O,O)-zinc(II)] monohydrate, C12H15NO9Zn
  17. The crystal structure of 2,3-difluoro-11H-benzo-[4,5]imidazo[2,1-a]isoindol-11-one, C14H6F2N2O
  18. The crystal structure of 2,3-di(9H-carbazol-9-yl)-9H-fluoren-9-one, C37H22N2O
  19. The crystal structure of 5-(2-chloro-3-(3,6-di-tert-butyl-9H-carbazol-9-yl)phenyl)-10,11-dihydro-5H-dibenzo[b,f]azepine, C40H39ClN2
  20. Crystal structure of 2-bromo-1-hydroxy-3-(3-methylbut-2-enyloxy)-9H-xanthen-9-one, C18H15BrO4
  21. Crystal structure of bis(μ2-benzenesulfonato-κ2O:O′)-bis(μ2-6,6′-((ethane-1,2-diylbis(azaneylylidene))bis(methaneylylidene))-bis(2-methoxyphenolato-κ6O,O′:O′,N,N′,O′′:O′′,O′′′))disodium(I)dicopper(II)
  22. The crystal structure of (E)-1,2-bis(benzo[e][1,2]azaborinin-2(1H)-yl)ethene, C18H16B2N2
  23. Crystal structure of 3-oxo-urs-12-en-28-benzyl ester, C37H52O3
  24. The crystal structure of ethyl (E)-1-chloro-3-(4-chloro-1-methyl-1H-indole-2-carbonyl)-4-oxo-2-phenylcyclooct-2-ene-1-carboxylate, C27H25Cl2NO4
  25. The crystal structure of 4,4′-((5-bromo-2-iodo-1,3-phenylene)bis(oxy))bis(tert-butylbenzene) ─ ethanol (2/1), C26H28BrIO2
  26. Crystal structure of (E)-1-(4-(benzyloxy)-2-hydroxyphenyl)-3-(dimethylamino)prop-2-en-1-one, C18H19NO3
  27. The crystal structure of N1,N3-bis(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)\ propanediamide hydrate, C25H26N6O4, 2(H2O)
  28. The crystal structure of 2,5-bis[(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)amino]cyclohexa-2,5-diene-1,4-dione, C28H26N6O4
  29. Crystal structure of 3,4-bis[2-(hydroxymethyl)-pyrrolidin-1-yl] cyclobut-3-ene-1,2-dione hydrate, C14H22N2O5
  30. The crystal structure of 2-(3,4–dichlorobenzyl)-1H-benzimidazole, C14H10Cl2N2
  31. The crystal structure of 2-(2-((4,6-dimethoxypyrimidin-2-yl)oxy)phenyl)-4-(piperidin-1-yl)-5H-chromeno[2,3-d]pyrimidine, C28H27N5O4
  32. The crystal structure of 6-(benzofuran-2-yl)-2-oxo-4,5-diphenyl-3,4-dihydro-2H-pyran-3-carbonitrile, C26H17NO3
  33. Crystal structure of N-(4-bromobenzyl)-3-(difluoromethyl)-1-methyl-N-(pyridin-2-yl)-1H-pyrazole-4-carboxamide, C18H15BrF2N4O
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  35. The crystal structure of (Z)-4-amino-N-(1-(4-hydroxyphenyl)propylidene)benzohydrazide, C16H17N3O2
  36. The crystal structure of diethyl 1,4-dihydro-2,6-dimethyl-4-(3-cyanophenyl)-3,5-pyridinedicarboxylate, C20H22N2O4
  37. Crystal structure of 3-(5-((4-(difluoromethoxy)phenyl) sulfonyl)-3,4,5,6-tetrahydropyrrolo[3,4-c]pyrrol-2(1H)-yl) oxetane-3-carboxamide, C17H19F2N3O5S
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  48. Crystal structure of 3-amino-N′-hydroxy-1H-pyrazole-4-carboximidamide, C4H7N5O
  49. The crystal structure of 1,3-diacetyltetrahydroimidazo[4,5-d]imidazole-2,5(1H,3H)-dione, C8H10O4N4
  50. Crystal structure of catena-poly[aqua-(μ2-1,4-diazabicyclo[2.2.2]octane-k2N: N′)-bis(sorbato-κ1O)-copper(II), C18H28CuN2O5
  51. Crystal structure of catena-poly[triaqua-(μ2 -1-(4-carboxylatophenyl)-4-oxo-1,4-dihydropyridazine-3-carboxylato-κ3O,O′:O′′)manganese(II)], C12H12N2O8Mn
  52. The crystal structure of [hexaaquamagnesium(II)] 4-[(pyridine-4-carbonyl)-amino]-phthalate trihydrate, C14H26N2O14Mg
  53. Crystal structure of 1-(p-tolylphenyl)-4-(2-furoyl)-3-methyl-1H-pyrazol-5-ol, C16H14N2O3
  54. The crystal structure of bis(1,4,7,10,13-pentaoxacyclopentadecane)-potassium(I) dichloridocopper(I), C20H40Cl2CuKO10
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