organic compounds
2,4-Dichloro-N-cyclohexylbenzamide
aDepartment of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan, and bDepartment für Chemie, Fakultät für Naturwissenschaften, Universität Paderborn, Warburgerstrasse 100, D-33098 Paderborn, Germany
*Correspondence e-mail: aamersaeed@yahoo.com
In the title molecule, C13H15Cl2NO, the cyclohexane ring adopts a chair conformation. The aromatic ring plane is oriented with respect to the N/O/C plane at a dihedral angle of 51.88 (7)°. In the intermolecular N—H⋯O hydrogen bonds link the molecules into infinite chains along the [010] direction.
Related literature
For related literature, see: Makino et al. (2001, 2003); Ho et al. (2002); Zhichkin et al. (2007); Jackson et al. (1994); Capdeville et al. (2002); Manley et al. (2002); Igawa et al. (1999); Jones & Kuś (2004). For ring conformation puckering parameters, see: Cremer & Pople (1975).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2002); cell SAINT (Bruker, 2002); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536808008131/hk2439sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808008131/hk2439Isup2.hkl
A mixture of 2,4-dichlorobenzoyl chloride (65.7 mmol), cyclohexyl amine (86.9 mmol) and pyridine (20 ml) was left at 298 K for 15 h. Then, water (100 ml) was added and the resulting precipitates were collected. Recrystallization of the precipitates from benzene gave the title compound (yield; 75%).
H atoms were positioned geometrically, with N—H = 0.88 Å (for NH) and C—H = 0.95, 0.99 and 1.00 Å for aromatic, methylene and methine H and constrained to ride on their parent atoms, with Uiso(H) = 1.2Ueq(C,N).
Data collection: SMART (Bruker, 2002); cell
SAINT (Bruker, 2002); data reduction: SAINT (Bruker, 2002); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXL97 (Sheldrick, 2008); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).C13H15Cl2NO | F(000) = 1136 |
Mr = 272.16 | Dx = 1.377 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -C 2yc | Cell parameters from 978 reflections |
a = 26.135 (3) Å | θ = 2.5–25.9° |
b = 4.9144 (6) Å | µ = 0.48 mm−1 |
c = 20.449 (2) Å | T = 120 K |
β = 90.167 (3)° | Prism, colorless |
V = 2626.4 (5) Å3 | 0.48 × 0.17 × 0.12 mm |
Z = 8 |
Bruker SMART APEX diffractometer | 3141 independent reflections |
Radiation source: sealed tube | 2389 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.041 |
ϕ and ω scans | θmax = 27.9°, θmin = 1.6° |
Absorption correction: multi-scan (SADABS; Sheldrick, 2004) | h = −34→34 |
Tmin = 0.803, Tmax = 0.945 | k = −6→6 |
10950 measured reflections | l = −26→26 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.043 | Hydrogen site location: difference Fourier map |
wR(F2) = 0.110 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0561P)2 + 0.7836P] where P = (Fo2 + 2Fc2)/3 |
3141 reflections | (Δ/σ)max < 0.001 |
154 parameters | Δρmax = 0.33 e Å−3 |
0 restraints | Δρmin = −0.21 e Å−3 |
C13H15Cl2NO | V = 2626.4 (5) Å3 |
Mr = 272.16 | Z = 8 |
Monoclinic, C2/c | Mo Kα radiation |
a = 26.135 (3) Å | µ = 0.48 mm−1 |
b = 4.9144 (6) Å | T = 120 K |
c = 20.449 (2) Å | 0.48 × 0.17 × 0.12 mm |
β = 90.167 (3)° |
Bruker SMART APEX diffractometer | 3141 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2004) | 2389 reflections with I > 2σ(I) |
Tmin = 0.803, Tmax = 0.945 | Rint = 0.041 |
10950 measured reflections |
R[F2 > 2σ(F2)] = 0.043 | 0 restraints |
wR(F2) = 0.110 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.33 e Å−3 |
3141 reflections | Δρmin = −0.21 e Å−3 |
154 parameters |
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 > 2sigma(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. |
x | y | z | Uiso*/Ueq | ||
Cl1 | 0.55602 (2) | 0.84379 (11) | 0.19724 (2) | 0.03406 (16) | |
Cl2 | 0.683870 (19) | 0.21813 (13) | 0.05939 (3) | 0.04287 (18) | |
O1 | 0.45551 (5) | 0.8154 (2) | 0.11531 (7) | 0.0276 (3) | |
N1 | 0.43595 (6) | 0.3718 (3) | 0.12891 (8) | 0.0251 (4) | |
H1B | 0.4481 | 0.2049 | 0.1303 | 0.030* | |
C1 | 0.38119 (6) | 0.4124 (4) | 0.13939 (10) | 0.0246 (4) | |
H1A | 0.3743 | 0.6126 | 0.1403 | 0.029* | |
C2 | 0.35016 (7) | 0.2882 (5) | 0.08417 (9) | 0.0309 (5) | |
H2A | 0.3568 | 0.0901 | 0.0821 | 0.037* | |
H2B | 0.3607 | 0.3698 | 0.0421 | 0.037* | |
C3 | 0.29284 (8) | 0.3379 (5) | 0.09487 (10) | 0.0375 (5) | |
H3A | 0.2858 | 0.5356 | 0.0927 | 0.045* | |
H3B | 0.2731 | 0.2480 | 0.0595 | 0.045* | |
C4 | 0.27550 (7) | 0.2290 (5) | 0.16035 (10) | 0.0333 (5) | |
H4A | 0.2780 | 0.0280 | 0.1602 | 0.040* | |
H4B | 0.2392 | 0.2784 | 0.1673 | 0.040* | |
C5 | 0.30768 (8) | 0.3422 (5) | 0.21592 (10) | 0.0382 (5) | |
H5A | 0.2973 | 0.2548 | 0.2575 | 0.046* | |
H5B | 0.3014 | 0.5401 | 0.2200 | 0.046* | |
C6 | 0.36460 (7) | 0.2927 (5) | 0.20447 (9) | 0.0317 (5) | |
H6A | 0.3847 | 0.3769 | 0.2403 | 0.038* | |
H6B | 0.3715 | 0.0946 | 0.2048 | 0.038* | |
C7 | 0.46841 (7) | 0.5748 (4) | 0.11741 (8) | 0.0193 (4) | |
C8 | 0.52252 (6) | 0.4894 (3) | 0.10407 (8) | 0.0179 (4) | |
C9 | 0.56448 (7) | 0.6043 (4) | 0.13615 (8) | 0.0214 (4) | |
C10 | 0.61389 (7) | 0.5236 (4) | 0.12231 (9) | 0.0256 (4) | |
H10A | 0.6421 | 0.6031 | 0.1447 | 0.031* | |
C11 | 0.62169 (7) | 0.3258 (4) | 0.07559 (9) | 0.0256 (4) | |
C12 | 0.58138 (7) | 0.2087 (4) | 0.04197 (9) | 0.0247 (4) | |
H12A | 0.5873 | 0.0740 | 0.0096 | 0.030* | |
C13 | 0.53219 (7) | 0.2924 (4) | 0.05662 (9) | 0.0213 (4) | |
H13A | 0.5042 | 0.2134 | 0.0337 | 0.026* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0376 (3) | 0.0338 (3) | 0.0307 (3) | −0.0036 (2) | −0.0058 (2) | −0.0119 (2) |
Cl2 | 0.0182 (2) | 0.0630 (4) | 0.0474 (3) | 0.0106 (2) | 0.0028 (2) | 0.0024 (3) |
O1 | 0.0274 (7) | 0.0119 (7) | 0.0436 (8) | 0.0027 (5) | 0.0016 (6) | 0.0005 (6) |
N1 | 0.0181 (8) | 0.0111 (7) | 0.0463 (10) | 0.0031 (6) | 0.0046 (7) | −0.0003 (7) |
C1 | 0.0170 (8) | 0.0140 (9) | 0.0428 (11) | 0.0028 (7) | 0.0061 (8) | 0.0019 (8) |
C2 | 0.0229 (10) | 0.0470 (13) | 0.0229 (10) | 0.0073 (9) | 0.0017 (8) | 0.0067 (9) |
C3 | 0.0219 (10) | 0.0570 (15) | 0.0335 (11) | 0.0077 (10) | −0.0015 (9) | 0.0059 (10) |
C4 | 0.0191 (9) | 0.0394 (13) | 0.0413 (12) | −0.0002 (9) | 0.0046 (8) | 0.0033 (10) |
C5 | 0.0295 (11) | 0.0534 (15) | 0.0318 (11) | 0.0005 (10) | 0.0091 (9) | −0.0050 (10) |
C6 | 0.0243 (10) | 0.0472 (14) | 0.0237 (9) | −0.0002 (9) | −0.0003 (8) | −0.0091 (9) |
C7 | 0.0220 (9) | 0.0160 (9) | 0.0199 (8) | 0.0007 (7) | −0.0008 (7) | −0.0017 (7) |
C8 | 0.0202 (8) | 0.0142 (8) | 0.0195 (8) | 0.0000 (7) | 0.0002 (7) | 0.0041 (7) |
C9 | 0.0254 (9) | 0.0178 (9) | 0.0209 (8) | −0.0027 (7) | −0.0007 (7) | 0.0025 (7) |
C10 | 0.0207 (9) | 0.0320 (11) | 0.0242 (9) | −0.0058 (8) | −0.0045 (7) | 0.0053 (8) |
C11 | 0.0170 (9) | 0.0342 (11) | 0.0256 (9) | 0.0044 (8) | 0.0023 (7) | 0.0070 (8) |
C12 | 0.0239 (9) | 0.0269 (11) | 0.0235 (9) | 0.0047 (8) | 0.0016 (7) | 0.0003 (8) |
C13 | 0.0190 (9) | 0.0206 (10) | 0.0244 (9) | 0.0006 (7) | −0.0021 (7) | −0.0008 (7) |
Cl1—C9 | 1.7310 (19) | C4—H4B | 0.9900 |
Cl2—C11 | 1.7419 (19) | C5—C6 | 1.526 (3) |
O1—C7 | 1.231 (2) | C5—H5A | 0.9900 |
N1—C7 | 1.331 (2) | C5—H5B | 0.9900 |
N1—C1 | 1.461 (2) | C6—H6A | 0.9900 |
N1—H1B | 0.8800 | C6—H6B | 0.9900 |
C1—C2 | 1.517 (3) | C7—C8 | 1.501 (2) |
C1—C6 | 1.519 (3) | C8—C13 | 1.394 (2) |
C1—H1A | 1.0000 | C8—C9 | 1.396 (2) |
C2—C3 | 1.534 (3) | C9—C10 | 1.381 (3) |
C2—H2A | 0.9900 | C10—C11 | 1.378 (3) |
C2—H2B | 0.9900 | C10—H10A | 0.9500 |
C3—C4 | 1.513 (3) | C11—C12 | 1.382 (3) |
C3—H3A | 0.9900 | C12—C13 | 1.383 (3) |
C3—H3B | 0.9900 | C12—H12A | 0.9500 |
C4—C5 | 1.518 (3) | C13—H13A | 0.9500 |
C4—H4A | 0.9900 | ||
C7—N1—C1 | 123.28 (15) | C4—C5—H5B | 109.3 |
C7—N1—H1B | 118.4 | C6—C5—H5B | 109.3 |
C1—N1—H1B | 118.4 | H5A—C5—H5B | 108.0 |
N1—C1—C2 | 110.95 (16) | C1—C6—C5 | 110.70 (17) |
N1—C1—C6 | 110.96 (16) | C1—C6—H6A | 109.5 |
C2—C1—C6 | 110.05 (15) | C5—C6—H6A | 109.5 |
N1—C1—H1A | 108.3 | C1—C6—H6B | 109.5 |
C2—C1—H1A | 108.3 | C5—C6—H6B | 109.5 |
C6—C1—H1A | 108.3 | H6A—C6—H6B | 108.1 |
C1—C2—C3 | 110.49 (17) | O1—C7—N1 | 123.48 (16) |
C1—C2—H2A | 109.6 | O1—C7—C8 | 121.36 (16) |
C3—C2—H2A | 109.6 | N1—C7—C8 | 115.11 (15) |
C1—C2—H2B | 109.6 | C13—C8—C9 | 117.66 (16) |
C3—C2—H2B | 109.6 | C13—C8—C7 | 119.55 (15) |
H2A—C2—H2B | 108.1 | C9—C8—C7 | 122.76 (15) |
C4—C3—C2 | 111.41 (16) | C10—C9—C8 | 121.43 (17) |
C4—C3—H3A | 109.3 | C10—C9—Cl1 | 117.70 (14) |
C2—C3—H3A | 109.3 | C8—C9—Cl1 | 120.82 (14) |
C4—C3—H3B | 109.3 | C11—C10—C9 | 119.00 (17) |
C2—C3—H3B | 109.3 | C11—C10—H10A | 120.5 |
H3A—C3—H3B | 108.0 | C9—C10—H10A | 120.5 |
C3—C4—C5 | 111.50 (18) | C10—C11—C12 | 121.64 (17) |
C3—C4—H4A | 109.3 | C10—C11—Cl2 | 119.08 (14) |
C5—C4—H4A | 109.3 | C12—C11—Cl2 | 119.28 (15) |
C3—C4—H4B | 109.3 | C11—C12—C13 | 118.43 (18) |
C5—C4—H4B | 109.3 | C11—C12—H12A | 120.8 |
H4A—C4—H4B | 108.0 | C13—C12—H12A | 120.8 |
C4—C5—C6 | 111.40 (17) | C12—C13—C8 | 121.83 (17) |
C4—C5—H5A | 109.3 | C12—C13—H13A | 119.1 |
C6—C5—H5A | 109.3 | C8—C13—H13A | 119.1 |
C7—N1—C1—C2 | 113.7 (2) | N1—C7—C8—C9 | −130.16 (18) |
C7—N1—C1—C6 | −123.64 (19) | C13—C8—C9—C10 | −1.0 (3) |
N1—C1—C2—C3 | −178.66 (16) | C7—C8—C9—C10 | −179.29 (16) |
C6—C1—C2—C3 | 58.1 (2) | C13—C8—C9—Cl1 | −178.28 (13) |
C1—C2—C3—C4 | −56.3 (2) | C7—C8—C9—Cl1 | 3.4 (2) |
C2—C3—C4—C5 | 54.1 (3) | C8—C9—C10—C11 | 0.2 (3) |
C3—C4—C5—C6 | −54.1 (3) | Cl1—C9—C10—C11 | 177.62 (14) |
N1—C1—C6—C5 | 178.53 (16) | C9—C10—C11—C12 | 0.6 (3) |
C2—C1—C6—C5 | −58.3 (2) | C9—C10—C11—Cl2 | −178.55 (14) |
C4—C5—C6—C1 | 56.2 (2) | C10—C11—C12—C13 | −0.7 (3) |
C1—N1—C7—O1 | 0.9 (3) | Cl2—C11—C12—C13 | 178.49 (14) |
C1—N1—C7—C8 | −176.58 (16) | C11—C12—C13—C8 | −0.1 (3) |
O1—C7—C8—C13 | −126.00 (18) | C9—C8—C13—C12 | 0.9 (3) |
N1—C7—C8—C13 | 51.5 (2) | C7—C8—C13—C12 | 179.29 (17) |
O1—C7—C8—C9 | 52.3 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1B···O1i | 0.88 | 1.95 | 2.796 (3) | 161 |
Symmetry code: (i) x, y−1, z. |
Experimental details
Crystal data | |
Chemical formula | C13H15Cl2NO |
Mr | 272.16 |
Crystal system, space group | Monoclinic, C2/c |
Temperature (K) | 120 |
a, b, c (Å) | 26.135 (3), 4.9144 (6), 20.449 (2) |
β (°) | 90.167 (3) |
V (Å3) | 2626.4 (5) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.48 |
Crystal size (mm) | 0.48 × 0.17 × 0.12 |
Data collection | |
Diffractometer | Bruker SMART APEX diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 2004) |
Tmin, Tmax | 0.803, 0.945 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10950, 3141, 2389 |
Rint | 0.041 |
(sin θ/λ)max (Å−1) | 0.658 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.043, 0.110, 1.02 |
No. of reflections | 3141 |
No. of parameters | 154 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.33, −0.21 |
Computer programs: SMART (Bruker, 2002), SAINT (Bruker, 2002), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1B···O1i | 0.88 | 1.95 | 2.796 (3) | 161.00 |
Symmetry code: (i) x, y−1, z. |
Acknowledgements
AS gratefully acknowledges a research grant from Quaid-i-Azam University, Islamabad.
References
Bruker (2002). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Capdeville, R., Buchdunger, E., Zimmermann, J. & Matter, J. (2002). Nat. Rev. Drug. Discov. 1, 493–502. Web of Science CrossRef PubMed CAS Google Scholar
Cremer, D. & Pople, J. A. (1975). J. Am. Chem. Soc. 97, 1354–1358. CrossRef CAS Web of Science Google Scholar
Ho, T.-I., Chen, W.-S., Hsu, C.-W., Tsai, Y.-M. & Fang, J.-M. (2002). Heterocycles, 57, 1501–1506. CrossRef CAS Google Scholar
Igawa, H., Nishimura, M., Okada, K. & Nakamura, T. (1999). Jpn Kokai Tokkyo Koho JP 11171848. Google Scholar
Jackson, S., Degrado, W., Dwivedi, A., Parthasarathy, A., Higley, A., Krywko, J., Rockwell, A., Markwalder, J., Wells, G., Wexler, R., Mousa, S. & Harlow, R. (1994). J. Am. Chem. Soc. 116, 3220–3230. CSD CrossRef CAS Web of Science Google Scholar
Jones, P. G. & Kuś, P. (2004). Acta Cryst. E60, o1299–o1300. Web of Science CSD CrossRef IUCr Journals Google Scholar
Makino, S., Nakanishi, E. & Tsuji, T. (2003). Bull. Korean Chem. Soc. 24, 389–392. CAS Google Scholar
Makino, S., Suzuki, N., Nakanishi, E. & Tsuji, T. (2001). Synlett, pp. 333–336. Google Scholar
Manley, P. W., Furet, P., Bold, G., Brüggen, J., Mestan, J., Meyer, T., Schnell, C. R., Wood, J., Haberey, M., Huth, A., Krüger, M., Menrad, A., Ottow, E., Seidelmann, D., Siemeister, G. & Thierauch, K.-H. (2002). J. Med. Chem. 45, 5687–5693. Web of Science CrossRef PubMed CAS Google Scholar
Sheldrick, G. M. (2004). SADABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Zhichkin, P., Kesicki, E., Treiberg, J., Bourdon, L. M., Ronsheim, M., Ooi, H. C., White, S., Judkins, A. & Fairfax, D. (2007). Org. Lett. 9, 1415–1418. Web of Science CrossRef PubMed CAS Google Scholar
This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
The benzanilide core is present in compounds with such a wide range of biological activities that it has been called a privileged structure. Benzanilides serve as intermediates towards benzothiadiazin-4-ones (Makino et al., 2003), quinazoline-2,4-diones (Makino et al., 2001), benzodiazepine-2,5-diones (Ho et al., 2002) and 2,3-disubstituted-3H-quinazoline-4-ones (Zhichkin et al., 2007). Benzanilides have established their efficancy as centroid elements of ligands that bind to a wide variety of receptor types. Thus benzanilides containing aminoalkyl groups originally designed as a peptidomimetic have been incorporated in an Arg-Gly-Asp cyclic peptide yielding a high affinity GPIIb/IIIa ligand (Jackson et al., 1994). Imatinib is an ATP-site binding kinase inhibitor and platelet-derived growth factor receptor kinases (Capdeville et al., 2002). Pyridylmethyl containing benzanilides are vascular endothelial growth factor receptor and tyrosine kinase inhibitor (Manley et al., 2002). Furthermore, benzamides have been reported to have activities as acetyl-CoA carboxylase and farnesyl transferase inhibitors (Igawa et al., 1999). We report herein the crystal structure of the title compound, (I).
In the molecule of the title compound, (I), (Fig. 1) the bond lengths and angles are within normal ranges. Ring A (C1–C6) is not planar, having total puckering amplitude, QT, of 0.575 (3) Å. It adopts chair conformation [ϕ = -177.97 (2)° and θ = 176.74 (3)°] (Cremer & Pople, 1975). Ring B (C8–C13) is, of course, planar and it is oriented with respect to the (N1/O1/C7) plane at a dihedral angle of 51.88 (7)°. The N1—C7—C8—C9 torsion angle is -130.16 (18)°. In N-cyclohexyl-4-(methoxycarbonyl)benzamide (Jones & Kuś, 2004), the corresponding torsion angles are reported as -17.9 (2)° and -45.2 (2)°.
In the crystal structure, intermolecular N—H···O hydrogen bonds (Table 1) link the molecules into infinite chains along the [010] direction (Fig. 2), in which they may be effective in the stabilization of the structure.