Startseite Crystal structure of 4-bromo-2-(4-chlorophenyl)-1-methyl-5-(trifluoromethyl)-1H-pyrrole-3-carbonitrile, C13H7BrClF3N2
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Crystal structure of 4-bromo-2-(4-chlorophenyl)-1-methyl-5-(trifluoromethyl)-1H-pyrrole-3-carbonitrile, C13H7BrClF3N2

  • Jia-Rui Qin ORCID logo , Wen-Hao Tang , Kai Li und Hai-Yu Pan EMAIL logo
Veröffentlicht/Copyright: 8. Dezember 2023

Abstract

C13H7BrClF3N2, monoclinic, P21/c (no. 14), a = 9.4183(18) Å, b = 15.185(3) Å, c = 13.1826(18) Å, β = 133.905(8)°, V = 1358.4(4) Å3, Z = 4, R gt (F) = 0.0420, wR ref (F2) = 0.1015, T = 293 K.

CCDC no.: 2304260

The molecular structure is shown in the figure. 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: Colourless block
Size: 0.23 × 0.20 × 0.18 mm
Wavelength: Mo Kα radiation (0.71073 Å)
μ: 3.25 mm−1
Diffractometer, scan mode: Bruker APEX-II, φ and ω
θmax, completeness: 25.0°, >99 %
N(hkl)measured, N(hkl)unique, Rint: 6787, 2385, 0.037
Criterion for Iobs, N(hkl)gt: Iobs > 2σ(Iobs), 1851
N(param)refined: 182
Programs: Bruker [1], SHELX [2, 3], Olex2 [4]
Table 2:

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

Atom x y z Uiso*/Ueq
Br1 1.10859 (5) 0.65623 (3) 0.70360 (4) 0.05429 (18)
C1 0.8392 (4) 0.6293 (2) 0.1822 (3) 0.0336 (8)
C2 0.6855 (5) 0.6737 (2) 0.0567 (4) 0.0388 (8)
H2A 0.587817 0.701409 0.046158 0.047*
C3 0.6790 (5) 0.6764 (2) −0.0509 (4) 0.0401 (8)
H3A 0.576055 0.705277 −0.134574 0.048*
C4 0.8254 (5) 0.6363 (2) −0.0344 (4) 0.0382 (8)
C5 0.9785 (5) 0.5947 (2) 0.0883 (4) 0.0439 (9)
H5A 1.078000 0.568977 0.099097 0.053*
C6 0.9858 (5) 0.5907 (2) 0.1966 (4) 0.0424 (8)
H6A 1.089953 0.561943 0.279885 0.051*
C7 0.8520 (4) 0.6248 (2) 0.2995 (3) 0.0331 (7)
C8 1.0065 (4) 0.6491 (2) 0.4392 (3) 0.0341 (7)
C9 0.9507 (4) 0.6318 (2) 0.5123 (3) 0.0339 (7)
C10 0.7643 (4) 0.59720 (19) 0.4175 (3) 0.0327 (7)
C11 0.5218 (5) 0.5535 (2) 0.1602 (4) 0.0494 (9)
H11A 0.415589 0.594638 0.115938 0.074*
H11B 0.494048 0.500988 0.184368 0.074*
H11C 0.535511 0.539026 0.096437 0.074*
C12 1.1789 (5) 0.6950 (2) 0.4921 (4) 0.0421 (8)
C13 0.6322 (5) 0.5702 (2) 0.4360 (4) 0.0450 (9)
Cl1 0.81462 (16) 0.63860 (7) −0.17157 (10) 0.0596 (3)
F1 0.4589 (3) 0.61039 (19) 0.3446 (3) 0.0721 (7)
F2 0.5931 (4) 0.48453 (16) 0.4157 (3) 0.0839 (8)
F3 0.7063 (3) 0.58747 (19) 0.5621 (2) 0.0760 (7)
N1 0.7057 (4) 0.59309 (16) 0.2883 (3) 0.0332 (6)
N2 1.3138 (5) 0.7340 (2) 0.5339 (4) 0.0688 (10)

1 Source of materials

In a representative experiment 0.5 g (1.2 mmol) chlorfenapyr was dissolved in anhydrous dichloromethane, boron tribromide 0.4 g (1.5 mmol) was slowly dropped into the solution, and ethyl acetate and water were extracted to obtain 4-bromo-2-(4-chlorophenyl)-1-methyl-5-(trifluoromethyl)-1H-pyrrole-3-carbonitrile. Under the catalysis of iron powder, the title compound was obtained by bromination of the above compounds twice. Crystals of the title compound were obtained by slow evaporation within 3 days in the mixed solution of ethyl acetate and n-hexane.

2 Experimental details

The collected diffraction data were then processed using the Bruker SAINT program [1], which applies standard corrections for absorption and decay of the X-ray source. The corrected data were then further analyzed using the SHELXT software suite to obtain the crystal structure [2]. The final refinement was performed using the Bruker SHELXL program [3], with the aid of the OLEX2 program for visualizing and refining the structure [4].

3 Comment

Aryl pyrrole insecticides and acaricides are commonly used pesticides with low toxicity, and the representative drug is chlorfenapyr [5]. The title compound is a key intermediate for the synthesis of chlorfenapyr, and it is of good significance to promote the scale production [6], [7], [8], [9] of chlorfenapyr.

The 4-bromo-2-(4-chlorophenyl)-1-methyl-5-(trifluoromethyl)-1H-pyrrole-3-carbonitrile was synthesized and characterized through a combination of analytical methods [10]. There is one molecule in the asymmetric unit. The benzene ring and pyrrole ring are non-coplanar, with a dihedral angle of 54.32°. Several important bond angle data are involved as follows C1–C7–C8 = 129.1°, C1–C7–N1 = 124.3°.

The title compound has been reported for the first time in this paper. The geometric parameters are in the expected ranges [11].


Corresponding author: Hai-Yu Pan, School of Pharmacy, North China University of Science and Technology, 063210 Caofeidian District, Tangshan, P.R. China, E-mail:
0315 8805803.

Acknowledgments

This work was financially supported by the Hebei Provincial Natural Science Foundation of China (C2020209081). This work was financially supported by Beijing Zhongxingnuo Technology Co., Ltd.

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

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

  3. Research funding: Hebei Provincial Natural Science Foundation of China (C2020209081). This work was financially supported by Beijing Zhongxingnuo Technology Co., Ltd.

References

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Received: 2023-10-30
Accepted: 2023-11-23
Published Online: 2023-12-08
Published in Print: 2024-02-26

© 2023 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
  3. Crystal structure of poly[diaqua-(μ4-3,3′-di(1H-1,2,4-triazol-1-yl)-[1,1′-biphenyl]-4,4′-dicarboxylate-N:N′:O:O′)cadmium(II)], C18H14N6O6Cd
  4. Crystal structure of (8R,8′S,13S,13′R)-8,8′-bis(hydroxymethyl)-9,9′,10,10′-tetramethoxy-5,5′,6,6′,8,8′,13,13′-octahydro-[13,13′-bi[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinoline]-7,7′-diium chloride-methanol (1/2), C46H58N2O14Cl2
  5. The crystal structure of 8-methoxy-2,2-diphenyl-tosyl-1,2-dihydro-2λ4,3λ4-[1,3,2]diazaborolo[4,5,1-ig]quinoline, C29H25BN2O3S
  6. Crystal structure of aqua-(5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ4N,N′,N″,N‴)copper(II) 5-carboxyisophthalate tetrahydrate, C25H50N4CuO11
  7. The crystal structure of 1-(naphthalen-2-ylsulfonyl)-2,2-diphenyl-1,2-dihydro-2λ4,3λ4-[1,3,2]diazaborolo[4,5,1-ij]quinoline, C31H23BN2O2S
  8. Crystal structure of iodido-(η6-benzene) (1-(pyridin-2-yl)-N-(p-fluoro-methanamine)-κ2N,Nʹ)ruthenium(II) hexaflourophosphate, (C18H15F7IN2RuP)
  9. The crystal structure of 1-(3-oxo-1-phenyl-3-(p-tolyl) propylidene)-1,3-dihydro-2H-inden-2-one, C25H20O2
  10. Crystal structure of tricyclohexyl[4-(4H-1,2,4-triazol-4-yl)-benzoato-κO]tin(IV), C27H39N3O2Sn
  11. Crystal structure of [triaqua-(8-carboxymethoxy-quinoline-2-carboxylate-κ4N,O,O,O)cadmium(II)]monohydrate, C12H15NO9Cd
  12. Crystal structure of ethyl 2-((4-(3,5-dimethylisoxazol-4-yl)-2,6-difluorophenyl)amino)benzoate, C20H18F2N2O3
  13. The crystal structure of 2-(hydroxymethyl)-2-(4H-1,2,4-triazol-4-yl)propane-1,3-diol, C6H11N3O3
  14. The crystal structure of 1,2-bis(2,4-dinitrophenyl) hydrazine, C12H8N6O8
  15. Crystal structure of 1-(2,6-dichloro-4-(3,5-dimethylisoxazol-4-yl)phenyl)-1,2-dihydro-4H-benzo[d][1,3]oxazin-4-one, C19H14Cl2N2O3
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  17. Crystal structure of N2,N6-bis(2-(((Z)-5-bromo-2-hydroxybenzylidene)amino) phenyl)pyridine-2,6-dicarboxamide, C33H23Br2N5O4
  18. The crystal structure of (E)-2-methoxy-6-(((5-methyl-1,3,4-thiadiazol-2-yl)imino)methyl)phenol, C11H11N3O2S
  19. The crystal structure of 3-((tert-butyldiphenylsilyl)methyl)-5,5-diphenyl-6-(p-tolyl) tetrahydro-2H-pyran-2-one, C41H42O2Si
  20. Crystal structure of 9-fluoro-4-(6-methoxypyridin-3-yl)-5,6-dihydrobenzo[h]quinazolin-2-amine, C18H15FN4O
  21. The crystal structure of 2-bromo-5-(4-cyanophenoxy)benzyl 1-methyl-1,2,5,6-tetrahydropyridine-3-carboxylate, C21H19BrN2O3
  22. Crystal structure of 3,3′-(1,4-phenylenebis(methylene))bis(1-isopropyl-1H-imidazol-3-ium) bis(hexafluorophosphate(V)), C10H14F6N2P
  23. The crystal structure of 2,2-di(thiophen-3-yl)-1-tosyl-1,2-dihydro-2λ4,3λ4-[1,3,2]diazaborolo[4,5,1-ig]quinoline, C24H19BN2O2S3
  24. Crystal structure of 5-bromo-1-(2-iodobenzoyl)-1H-indole-3-carbaldehyde, C16H9BrINO2
  25. The crystal structure of monocarbonyl-2-carboxypyridinato-κ2N,O-triphenylphosphine-rhodium(I) acetonitrile solvate, C26H20.50N1.50O3PRh
  26. Crystal structure of dichlorido-tetrakis(1-(2,4-dichlorophenyl)-4,4-dimethyl-2-(1,2,4-triazol-1-yl)pent-1-en-3-ol-κ1N)manganese(II), C60H68O4N12Cl10Mn
  27. Crystal structure of 3-(tert-butyldiphenylsilyl)-1-(2,6-dichlorophenyl)-2,2-diphenylpropan-1-ol, C37H36Cl2OSi
  28. Crystal structure of langite from Mine du Pradet (France)
  29. The crystal structure of 5′-(furan-2-yl)-3′-((4-methylphenyl)sulfonamido)-3′,4′,5′,6′-tetrahydro-[1,1′:3′,1″-terphenyl]-4′-carboxylic acid, C30H27NO5S
  30. Synthesis and crystal structure of bis{2-(((4-acetophenone)imino)methyl)-4-fluorophenolato-κ2N,O}zinc(II), C30H22F2N2O4Zn
  31. The crystal structure of poly[(tripyridine-κ3N,N′,N″) μ3-(pyridine-3,4-dicarboxylate-κ3N:O:O′) manganese(II)], C22H22N4O8Mn
  32. The crystal structure of (E)-4-chloro-N′-(1-(4-hydroxyphenyl)propylidene)benzohydrazide, C16H15ClN2O2
  33. Synthesis and crystal structure of bis{2-(tert-butyl)-6-((E)-((4-((E)-1-(methoxyimino) ethyl)phenyl)imino)methyl)phenolato-κ2N,O}cobalt(II), C40H46CoN4O4
  34. Crystal structure of tetraaqua-[(1-(carboxymethyl)-1H-pyrazole-3-carboxylato-κ2N,O)cobalt(II)], C6H12CoN2O8
  35. (6R,7S)-2,3,13-trimethoxy-6,7-dimethyl-5,6,7,8-tetrahydrobenzo[3′,4′]cycloocta [1′,2′:4,5]benzo[1,2-d][1,3]dioxol-1-ol, C22H26O6
  36. Crystal structure of 2-((2,6-dichloro-4-(3,5-dimethylisoxazol-4-yl)phenyl)amino)benzoic acid, C18H14Cl2N2O3
  37. Crystal structure of (5aS,6aS,8aR,9R,11aS, 11bS,13R,13aS)-1,1,8a,11a-tetramethyl-9-((S)-1-((S)-5-methyl-6-oxo-3,6-dihydro-2H-pyran-2-yl)ethyl)-3-oxo-1,7,8,8a,9,10,11,11a,11b,12,13,13a-dodecahydro-3H,6H-cyclopenta[5,6]cyclopropa[1,8a]naphtho[2,1-c]oxepin-13-yl acetate, C32H44O6
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