organic compounds
4-Chloro-2-hydroxy-N-(4-methylphenyl)benzamide
aUniversity of Sargodha, Department of Chemistry, Sargodha, Pakistan, and bUniversity of Sargodha, Department of Physics, Sargodha, Pakistan
*Correspondence e-mail: dmntahir_uos@yahoo.com
In the title compound, C14H12ClNO2, the dihedral angle between the aromatic rings is 14.87 (11)° and an intramolecular N—H⋯O hydrogen bond generates an S(6) ring. In the crystal, molecules are linked by O—H⋯O hydrogen bonds, generating C(6) chains propagating along the c-axis direction.
Related literature
For related structures, see: Raza et al. (2010, 2011). For graph-set notation, see: Bernstein et al. (1995).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2009); cell SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON.
Supporting information
10.1107/S1600536812000773/hb6597sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536812000773/hb6597Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536812000773/hb6597Isup3.cml
The solution of 4-methylaniline (0.38 g, 4.0 mmol, 0.75 eq) in dry CHCl3 and dry Et3N (1 ml, 0.73 g, 7.0 mmol, 1.5 eq) was added slowly at room temperature to a mixture of 4-chloro-2-hydroxybenzoic acid (0.83 g, 5.0 mmol, 1 eq), SOCl2 (3.24 ml, 5.28 g, 44.0 mmol, 1.2 eq) and catalytic amount of dimethylformamide (1 drop) followed by 4 h reflux. After completion of reaction, the reaction mixture was cooled to room temperature, neutralized with aqueous NaHCO3 (10%), extracted with CHCl3 (3×25 ml). The organic layer was combined, dried over anhydrous Na2SO4, filtered and concentrated under reduced pressure to afford crude product. The column chromatographic purification with 5% EtOAc in hexane (2 L) over a silica gel
(23 cm length) afforded the title compound I as a white crystalline solid in the 18–59th fractions (50 ml each).Although H atoms were appeared in difference Fourier map but were positioned geometrically with (O–H = 0.82, N–H = 0.86 and C–H = 0.93–0.96 Å) and refined as riding with Uiso(H) = xUeq(C), where x = 1.5 for hydroxy & methyl H-atoms and x = 1.2 for other H atoms.
Data collection: APEX2 (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON (Spek, 2009).C14H12ClNO2 | F(000) = 544 |
Mr = 261.70 | Dx = 1.419 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 1243 reflections |
a = 13.8553 (12) Å | θ = 1.1–27.9° |
b = 7.6197 (7) Å | µ = 0.30 mm−1 |
c = 12.0114 (11) Å | T = 296 K |
β = 104.937 (5)° | Block, colorless |
V = 1225.23 (19) Å3 | 0.34 × 0.14 × 0.12 mm |
Z = 4 |
Bruker Kappa APEXII CCD diffractometer | 2988 independent reflections |
Radiation source: fine-focus sealed tube | 1832 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.048 |
Detector resolution: 7.6 pixels mm-1 | θmax = 28.3°, θmin = 3.0° |
ω scans | h = −18→17 |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | k = −10→10 |
Tmin = 0.979, Tmax = 0.988 | l = −15→15 |
10366 measured reflections |
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)] = 0.056 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.163 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0803P)2 + 0.1504P] where P = (Fo2 + 2Fc2)/3 |
2988 reflections | (Δ/σ)max < 0.001 |
165 parameters | Δρmax = 0.39 e Å−3 |
0 restraints | Δρmin = −0.21 e Å−3 |
C14H12ClNO2 | V = 1225.23 (19) Å3 |
Mr = 261.70 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 13.8553 (12) Å | µ = 0.30 mm−1 |
b = 7.6197 (7) Å | T = 296 K |
c = 12.0114 (11) Å | 0.34 × 0.14 × 0.12 mm |
β = 104.937 (5)° |
Bruker Kappa APEXII CCD diffractometer | 2988 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | 1832 reflections with I > 2σ(I) |
Tmin = 0.979, Tmax = 0.988 | Rint = 0.048 |
10366 measured reflections |
R[F2 > 2σ(F2)] = 0.056 | 0 restraints |
wR(F2) = 0.163 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.39 e Å−3 |
2988 reflections | Δρmin = −0.21 e Å−3 |
165 parameters |
Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All su's are estimated from the variances of the (full) variance-covariance matrix. The cell e.s.d.'s are taken into account in the estimation of distances, angles and torsion angles |
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 > σ(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 | −0.34725 (5) | 0.76527 (10) | −0.20816 (6) | 0.0577 (3) | |
O1 | 0.02457 (12) | 0.6924 (3) | −0.03254 (14) | 0.0433 (6) | |
O2 | 0.00477 (12) | 0.9612 (3) | 0.26357 (13) | 0.0429 (6) | |
N1 | 0.11035 (14) | 0.8338 (3) | 0.17119 (16) | 0.0362 (7) | |
C1 | −0.06586 (16) | 0.8587 (3) | 0.07420 (18) | 0.0307 (7) | |
C2 | −0.06343 (17) | 0.7590 (3) | −0.02354 (19) | 0.0309 (7) | |
C3 | −0.15057 (17) | 0.7321 (3) | −0.1100 (2) | 0.0369 (8) | |
C4 | −0.23926 (18) | 0.8024 (3) | −0.1004 (2) | 0.0395 (8) | |
C5 | −0.24347 (18) | 0.9064 (4) | −0.0066 (2) | 0.0433 (9) | |
C6 | −0.15738 (17) | 0.9312 (3) | 0.0788 (2) | 0.0378 (8) | |
C7 | 0.01973 (17) | 0.8882 (3) | 0.17747 (19) | 0.0330 (7) | |
C8 | 0.20016 (17) | 0.8321 (3) | 0.25990 (19) | 0.0336 (7) | |
C9 | 0.21756 (18) | 0.9335 (3) | 0.3585 (2) | 0.0398 (8) | |
C10 | 0.30691 (19) | 0.9134 (4) | 0.4426 (2) | 0.0442 (9) | |
C11 | 0.38017 (19) | 0.7971 (4) | 0.4309 (2) | 0.0447 (9) | |
C12 | 0.36287 (19) | 0.7055 (4) | 0.3288 (2) | 0.0498 (9) | |
C13 | 0.27424 (19) | 0.7211 (3) | 0.2442 (2) | 0.0440 (8) | |
C14 | 0.4741 (2) | 0.7698 (4) | 0.5263 (3) | 0.0643 (11) | |
H1 | 0.11427 | 0.79538 | 0.10518 | 0.0435* | |
H1A | 0.01808 | 0.65337 | −0.09769 | 0.0649* | |
H3 | −0.14878 | 0.66625 | −0.17466 | 0.0443* | |
H5 | −0.30317 | 0.95784 | −0.00191 | 0.0519* | |
H6 | −0.16000 | 0.99904 | 0.14229 | 0.0454* | |
H9 | 0.17007 | 1.01407 | 0.36852 | 0.0478* | |
H10 | 0.31781 | 0.98082 | 0.50924 | 0.0531* | |
H12 | 0.41224 | 0.63092 | 0.31648 | 0.0598* | |
H13 | 0.26452 | 0.65658 | 0.17647 | 0.0528* | |
H14A | 0.52971 | 0.75280 | 0.49345 | 0.0964* | |
H14B | 0.46641 | 0.66814 | 0.57041 | 0.0964* | |
H14C | 0.48596 | 0.87099 | 0.57550 | 0.0964* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0388 (4) | 0.0747 (6) | 0.0499 (4) | −0.0043 (3) | −0.0061 (3) | −0.0010 (4) |
O1 | 0.0351 (9) | 0.0606 (12) | 0.0338 (10) | 0.0033 (8) | 0.0084 (7) | −0.0120 (9) |
O2 | 0.0414 (10) | 0.0602 (12) | 0.0272 (9) | 0.0023 (9) | 0.0092 (7) | −0.0060 (8) |
N1 | 0.0368 (11) | 0.0452 (13) | 0.0260 (10) | −0.0010 (9) | 0.0068 (8) | −0.0022 (9) |
C1 | 0.0343 (12) | 0.0321 (13) | 0.0252 (12) | −0.0021 (10) | 0.0070 (9) | 0.0041 (10) |
C2 | 0.0314 (12) | 0.0324 (13) | 0.0294 (12) | −0.0004 (9) | 0.0089 (9) | 0.0042 (10) |
C3 | 0.0388 (13) | 0.0418 (15) | 0.0294 (13) | −0.0043 (11) | 0.0078 (10) | −0.0026 (10) |
C4 | 0.0348 (13) | 0.0446 (15) | 0.0358 (14) | −0.0041 (11) | 0.0034 (10) | 0.0053 (11) |
C5 | 0.0346 (14) | 0.0503 (17) | 0.0444 (15) | 0.0045 (11) | 0.0093 (11) | 0.0018 (12) |
C6 | 0.0395 (13) | 0.0400 (14) | 0.0341 (13) | 0.0025 (11) | 0.0098 (10) | −0.0020 (11) |
C7 | 0.0386 (13) | 0.0331 (13) | 0.0284 (12) | −0.0039 (10) | 0.0108 (10) | 0.0054 (10) |
C8 | 0.0352 (12) | 0.0374 (14) | 0.0276 (12) | −0.0045 (10) | 0.0071 (10) | 0.0026 (10) |
C9 | 0.0386 (14) | 0.0428 (15) | 0.0374 (14) | −0.0022 (11) | 0.0088 (11) | −0.0047 (11) |
C10 | 0.0453 (15) | 0.0510 (17) | 0.0338 (14) | −0.0094 (12) | 0.0056 (11) | −0.0053 (12) |
C11 | 0.0385 (14) | 0.0516 (16) | 0.0394 (15) | −0.0056 (12) | 0.0017 (11) | 0.0051 (12) |
C12 | 0.0364 (14) | 0.0592 (18) | 0.0513 (17) | 0.0051 (12) | 0.0066 (12) | −0.0047 (14) |
C13 | 0.0418 (14) | 0.0518 (16) | 0.0381 (14) | −0.0005 (12) | 0.0098 (11) | −0.0089 (12) |
C14 | 0.0489 (18) | 0.074 (2) | 0.057 (2) | −0.0018 (15) | −0.0098 (14) | 0.0058 (16) |
Cl1—C4 | 1.731 (3) | C9—C10 | 1.390 (4) |
O1—C2 | 1.351 (3) | C10—C11 | 1.382 (4) |
O2—C7 | 1.238 (3) | C11—C12 | 1.377 (4) |
O1—H1A | 0.8200 | C11—C14 | 1.510 (4) |
N1—C7 | 1.343 (3) | C12—C13 | 1.383 (4) |
N1—C8 | 1.414 (3) | C3—H3 | 0.9300 |
N1—H1 | 0.8600 | C5—H5 | 0.9300 |
C1—C7 | 1.496 (3) | C6—H6 | 0.9300 |
C1—C6 | 1.397 (3) | C9—H9 | 0.9300 |
C1—C2 | 1.406 (3) | C10—H10 | 0.9300 |
C2—C3 | 1.390 (3) | C12—H12 | 0.9300 |
C3—C4 | 1.372 (3) | C13—H13 | 0.9300 |
C4—C5 | 1.391 (3) | C14—H14A | 0.9600 |
C5—C6 | 1.371 (3) | C14—H14B | 0.9600 |
C8—C13 | 1.380 (3) | C14—H14C | 0.9600 |
C8—C9 | 1.382 (3) | ||
C2—O1—H1A | 109.00 | C10—C11—C12 | 116.9 (2) |
C7—N1—C8 | 127.9 (2) | C12—C11—C14 | 121.6 (3) |
C7—N1—H1 | 116.00 | C11—C12—C13 | 121.9 (3) |
C8—N1—H1 | 116.00 | C8—C13—C12 | 120.2 (2) |
C2—C1—C6 | 117.6 (2) | C2—C3—H3 | 120.00 |
C2—C1—C7 | 126.1 (2) | C4—C3—H3 | 120.00 |
C6—C1—C7 | 116.2 (2) | C4—C5—H5 | 121.00 |
C1—C2—C3 | 120.0 (2) | C6—C5—H5 | 121.00 |
O1—C2—C1 | 119.1 (2) | C1—C6—H6 | 119.00 |
O1—C2—C3 | 120.9 (2) | C5—C6—H6 | 119.00 |
C2—C3—C4 | 120.3 (2) | C8—C9—H9 | 120.00 |
Cl1—C4—C3 | 119.57 (18) | C10—C9—H9 | 120.00 |
Cl1—C4—C5 | 119.4 (2) | C9—C10—H10 | 119.00 |
C3—C4—C5 | 121.1 (2) | C11—C10—H10 | 119.00 |
C4—C5—C6 | 118.3 (2) | C11—C12—H12 | 119.00 |
C1—C6—C5 | 122.6 (2) | C13—C12—H12 | 119.00 |
N1—C7—C1 | 117.4 (2) | C8—C13—H13 | 120.00 |
O2—C7—C1 | 119.5 (2) | C12—C13—H13 | 120.00 |
O2—C7—N1 | 123.1 (2) | C11—C14—H14A | 109.00 |
N1—C8—C9 | 124.5 (2) | C11—C14—H14B | 109.00 |
N1—C8—C13 | 116.3 (2) | C11—C14—H14C | 110.00 |
C9—C8—C13 | 119.2 (2) | H14A—C14—H14B | 109.00 |
C8—C9—C10 | 119.2 (2) | H14A—C14—H14C | 109.00 |
C9—C10—C11 | 122.5 (2) | H14B—C14—H14C | 110.00 |
C10—C11—C14 | 121.5 (2) | ||
C8—N1—C7—O2 | 6.7 (4) | C2—C3—C4—Cl1 | −179.23 (18) |
C8—N1—C7—C1 | −173.7 (2) | C2—C3—C4—C5 | 2.2 (4) |
C7—N1—C8—C9 | −20.6 (4) | Cl1—C4—C5—C6 | 178.8 (2) |
C7—N1—C8—C13 | 159.8 (2) | C3—C4—C5—C6 | −2.7 (4) |
C6—C1—C2—O1 | 177.7 (2) | C4—C5—C6—C1 | 1.1 (4) |
C6—C1—C2—C3 | −1.5 (3) | N1—C8—C9—C10 | 176.5 (2) |
C7—C1—C2—O1 | −5.5 (4) | C13—C8—C9—C10 | −3.9 (4) |
C7—C1—C2—C3 | 175.4 (2) | N1—C8—C13—C12 | −177.2 (2) |
C2—C1—C6—C5 | 1.0 (4) | C9—C8—C13—C12 | 3.1 (4) |
C7—C1—C6—C5 | −176.2 (2) | C8—C9—C10—C11 | 0.9 (4) |
C2—C1—C7—O2 | −171.4 (2) | C9—C10—C11—C12 | 2.7 (4) |
C2—C1—C7—N1 | 8.9 (3) | C9—C10—C11—C14 | −176.4 (3) |
C6—C1—C7—O2 | 5.5 (3) | C10—C11—C12—C13 | −3.5 (4) |
C6—C1—C7—N1 | −174.1 (2) | C14—C11—C12—C13 | 175.6 (3) |
O1—C2—C3—C4 | −179.2 (2) | C11—C12—C13—C8 | 0.7 (4) |
C1—C2—C3—C4 | −0.1 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O1 | 0.86 | 1.96 | 2.658 (3) | 138 |
O1—H1A···O2i | 0.82 | 1.85 | 2.664 (2) | 173 |
Symmetry code: (i) x, −y+3/2, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | C14H12ClNO2 |
Mr | 261.70 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 296 |
a, b, c (Å) | 13.8553 (12), 7.6197 (7), 12.0114 (11) |
β (°) | 104.937 (5) |
V (Å3) | 1225.23 (19) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.30 |
Crystal size (mm) | 0.34 × 0.14 × 0.12 |
Data collection | |
Diffractometer | Bruker Kappa APEXII CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2009) |
Tmin, Tmax | 0.979, 0.988 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10366, 2988, 1832 |
Rint | 0.048 |
(sin θ/λ)max (Å−1) | 0.667 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.056, 0.163, 1.02 |
No. of reflections | 2988 |
No. of parameters | 165 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.39, −0.21 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009), WinGX (Farrugia, 1999) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O1 | 0.86 | 1.96 | 2.658 (3) | 138 |
O1—H1A···O2i | 0.82 | 1.85 | 2.664 (2) | 173 |
Symmetry code: (i) x, −y+3/2, z−1/2. |
Acknowledgements
The authors acknowledge the provision of funds for the purchase of diffractometer and encouragement by Dr Muhammad Akram Chaudhary, Vice Chancellor, University of Sargodha, Pakistan. The authors also acknowledge the technical support provided by Syed Muhammad Hussain Rizvi of Bana International, Karachi, Pakistan. ARR also acknowledges the Higher Education Commission, Government of Pakistan, for generous support of a research project (20–819).
References
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We have reported the crystal structures of (II) i.e., 2-hydroxy-N-(4-methylphenyl)benzamide (Raza et al., 2011) and (III) i.e., N-(4-chlorophenyl)-2-hydroxybenzamide (Raza et al., 2010) which are related to the title compound (I, Fig. 1). This compound has been prepared as a precursor for the synthesis of symmetric as well as asymmetric benzoxazepines.
In (I), the 3-chlorophenol group A (C1–C6/CL1/O1) and 4-methylanilinic group B (C8—C14) are roughly planar with r. m. s. deviations of 0.014 and 0.031 Å, respectively. The dihedral angle between A/B is 14.87 (11)°. The central formamide moiety C (O2/C7/N1) is of course planar. The dihedral angle between A/C and B/C is 7.59 (24)° and 18.74 (24)°, respectively. There exist intramolecular H-bondings of N—H···O and C—H···O types (Table 1, Fig. 1) completing S(6) ring motifs (Bernstein et al., 1995). There exists inter-molecular H-bondings of O—H···O type (Table 1, Fig. 2) due to which the molecules are linked in the form of one dimensional polymeric chains extending along the crystallographic c axis.