organic compounds
(2S)-Methyl 2-(4-chlorobenzenesulfonamido)-4-(methylsulfanyl)butanoate
aDepartment of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan, and bInstitut for Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
*Correspondence e-mail: shameed@qau.edu.pk
The enantiomerically pure title compound, C12H16ClNO4S2, contains a pyramidal N atom with an S—N bond length of 1.6306 (15) Å. Molecules are linked to form chains parallel to the a axis by classical N—H⋯O hydrogen bonding involving a sulfonyl O atom, supported by three weak C—H⋯X interactions. (X = S, O).
Related literature
For the applications of et al. (2007, 2008); Kashif et al. (2008); Serwar et al. (2009); Syed et al. (2009).
in industry and as intermediates in the synthesis of heterocycles, see: AkhtarExperimental
Crystal data
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Data collection: CrysAlis Pro (Oxford Diffraction, 2008); cell CrysAlis Pro; data reduction: CrysAlis Pro; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP (Siemens, 1994); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536809018297/bt2959sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809018297/bt2959Isup2.hkl
The title compound was synthesized by the reaction of methionine (0.02 mol) and 4-chlorobenzenesulfonyl chloride according to a reported procedure (Syed et al., 2009). Recrystallization of the product from acetone/water afforded crystals suitable for X-ray analysis.
The NH hydrogen was refined freely. Methyl H atoms were located in difference syntheses, idealized to C—H 0.98 Å and H—C—H 109.5°, and refined as rigid groups allowed to rotate but not tip. Other H atoms were placed in calculated positions and refined using a riding model with C—H 0.95 Å for aromatic H and 1.00 Å for methine CH. Hydrogen U values were fixed at 1.5 × U(eq) of the parent atom for methyl H and 1.2 × U(eq) of the parent atom for other H. The compound is θ 145°.
and its (S at C2) was confirmed by the Flack (1983) parameter. Data are 99.6% complete to 2Data collection: CrysAlis PRO (Oxford Diffraction, 2008); cell
CrysAlis PRO (Oxford Diffraction, 2008); data reduction: CrysAlis PRO (Oxford Diffraction, 2008); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP (Siemens, 1994); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The molecule of the title compound. Ellipsoids correspond to 50% probability levels. | |
Fig. 2. Packing diagram of the title compound, showing classical hydrogen bonds (thick dashed lines) and "weak" hydrogen bonds (thin dashed lines). H atoms not involved in these H bonds have been omitted. The interactions H2···O1 are omitted for clarity. |
C12H16ClNO4S2 | Dx = 1.480 Mg m−3 |
Mr = 337.83 | Melting point = 331–333 K |
Orthorhombic, P212121 | Cu Kα radiation, λ = 1.54184 Å |
a = 5.1814 (3) Å | Cell parameters from 10903 reflections |
b = 12.6089 (8) Å | θ = 3.5–75.6° |
c = 23.2137 (13) Å | µ = 4.92 mm−1 |
V = 1516.59 (16) Å3 | T = 100 K |
Z = 4 | Tablet, colourless |
F(000) = 704 | 0.20 × 0.12 × 0.06 mm |
Oxford Diffraction Xcalibur Nova A diffractometer | 3093 independent reflections |
Radiation source: Nova (Cu) X-ray Source | 3027 reflections with I > 2σ(I) |
Mirror monochromator | Rint = 0.033 |
Detector resolution: 10.3543 pixels mm-1 | θmax = 75.7°, θmin = 3.8° |
ω scans | h = −6→5 |
Absorption correction: multi-scan (CrysAlis PRO; Oxford Diffraction, 2008) | k = −15→15 |
Tmin = 0.548, Tmax = 1.000 | l = −29→27 |
14469 measured reflections |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.025 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.062 | w = 1/[σ2(Fo2) + (0.0339P)2 + 0.6444P] where P = (Fo2 + 2Fc2)/3 |
S = 1.04 | (Δ/σ)max = 0.001 |
3093 reflections | Δρmax = 0.20 e Å−3 |
187 parameters | Δρmin = −0.35 e Å−3 |
0 restraints | Absolute structure: Flack (1983), 1250 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.005 (12) |
C12H16ClNO4S2 | V = 1516.59 (16) Å3 |
Mr = 337.83 | Z = 4 |
Orthorhombic, P212121 | Cu Kα radiation |
a = 5.1814 (3) Å | µ = 4.92 mm−1 |
b = 12.6089 (8) Å | T = 100 K |
c = 23.2137 (13) Å | 0.20 × 0.12 × 0.06 mm |
Oxford Diffraction Xcalibur Nova A diffractometer | 3093 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Oxford Diffraction, 2008) | 3027 reflections with I > 2σ(I) |
Tmin = 0.548, Tmax = 1.000 | Rint = 0.033 |
14469 measured reflections |
R[F2 > 2σ(F2)] = 0.025 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.062 | Δρmax = 0.20 e Å−3 |
S = 1.04 | Δρmin = −0.35 e Å−3 |
3093 reflections | Absolute structure: Flack (1983), 1250 Friedel pairs |
187 parameters | Absolute structure parameter: 0.005 (12) |
0 restraints |
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 > 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 | ||
C1 | 0.6060 (3) | 0.70856 (13) | 0.30125 (7) | 0.0157 (3) | |
C2 | 0.7658 (3) | 0.64578 (13) | 0.25767 (7) | 0.0149 (3) | |
H2 | 0.9529 | 0.6527 | 0.2676 | 0.018* | |
C3 | 0.7198 (3) | 0.69178 (13) | 0.19720 (7) | 0.0157 (3) | |
H3A | 0.5399 | 0.6770 | 0.1853 | 0.019* | |
H3B | 0.7427 | 0.7697 | 0.1984 | 0.019* | |
C4 | 0.9040 (3) | 0.64498 (13) | 0.15292 (7) | 0.0175 (3) | |
H4A | 0.8724 | 0.5677 | 0.1501 | 0.021* | |
H4B | 1.0834 | 0.6552 | 0.1665 | 0.021* | |
C5 | 0.5616 (4) | 0.65296 (18) | 0.06022 (8) | 0.0279 (4) | |
H5A | 0.5565 | 0.5761 | 0.0662 | 0.042* | |
H5B | 0.5334 | 0.6687 | 0.0194 | 0.042* | |
H5C | 0.4261 | 0.6868 | 0.0833 | 0.042* | |
C6 | 0.5679 (4) | 0.87023 (14) | 0.34955 (8) | 0.0267 (4) | |
H6A | 0.3949 | 0.8791 | 0.3332 | 0.040* | |
H6B | 0.6529 | 0.9395 | 0.3522 | 0.040* | |
H6C | 0.5541 | 0.8390 | 0.3881 | 0.040* | |
C11 | 0.7949 (3) | 0.48637 (13) | 0.37042 (7) | 0.0166 (3) | |
C12 | 0.9359 (3) | 0.56678 (13) | 0.39648 (7) | 0.0194 (3) | |
H12 | 1.0801 | 0.5972 | 0.3774 | 0.023* | |
C13 | 0.8635 (4) | 0.60215 (14) | 0.45083 (8) | 0.0230 (3) | |
H13 | 0.9576 | 0.6570 | 0.4694 | 0.028* | |
C14 | 0.6511 (4) | 0.55597 (14) | 0.47751 (7) | 0.0225 (3) | |
C15 | 0.5128 (4) | 0.47418 (15) | 0.45226 (8) | 0.0224 (4) | |
H15 | 0.3716 | 0.4425 | 0.4719 | 0.027* | |
C16 | 0.5837 (3) | 0.43950 (13) | 0.39798 (7) | 0.0192 (3) | |
H16 | 0.4898 | 0.3843 | 0.3796 | 0.023* | |
O1 | 0.4034 (3) | 0.67950 (10) | 0.32058 (5) | 0.0225 (3) | |
O2 | 0.7177 (2) | 0.80112 (10) | 0.31298 (5) | 0.0202 (3) | |
O3 | 1.1274 (2) | 0.47165 (9) | 0.28709 (5) | 0.0187 (2) | |
O4 | 0.7538 (2) | 0.34783 (10) | 0.28792 (5) | 0.0199 (3) | |
S1 | 0.87182 (9) | 0.70331 (3) | 0.081959 (17) | 0.02100 (10) | |
S2 | 0.86006 (8) | 0.45109 (3) | 0.298219 (16) | 0.01470 (9) | |
Cl | 0.55423 (10) | 0.60320 (4) | 0.54465 (2) | 0.03195 (12) | |
N | 0.6935 (3) | 0.53293 (11) | 0.25852 (6) | 0.0151 (3) | |
H01 | 0.540 (6) | 0.521 (2) | 0.2616 (12) | 0.041 (7)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0189 (8) | 0.0141 (7) | 0.0140 (7) | 0.0002 (7) | −0.0010 (7) | 0.0023 (6) |
C2 | 0.0149 (7) | 0.0120 (7) | 0.0176 (8) | −0.0009 (6) | −0.0006 (6) | −0.0011 (6) |
C3 | 0.0160 (7) | 0.0143 (7) | 0.0168 (8) | 0.0003 (6) | −0.0005 (6) | 0.0005 (6) |
C4 | 0.0157 (8) | 0.0201 (8) | 0.0168 (7) | 0.0025 (6) | 0.0004 (6) | 0.0016 (6) |
C5 | 0.0225 (9) | 0.0396 (10) | 0.0216 (9) | 0.0020 (8) | −0.0013 (7) | 0.0023 (8) |
C6 | 0.0365 (11) | 0.0214 (8) | 0.0223 (8) | 0.0063 (8) | 0.0019 (8) | −0.0074 (7) |
C11 | 0.0165 (8) | 0.0140 (7) | 0.0192 (8) | 0.0022 (6) | −0.0011 (6) | 0.0035 (6) |
C12 | 0.0187 (8) | 0.0184 (8) | 0.0212 (8) | −0.0017 (6) | 0.0012 (6) | 0.0032 (6) |
C13 | 0.0266 (9) | 0.0195 (8) | 0.0228 (8) | −0.0008 (8) | −0.0022 (8) | −0.0008 (7) |
C14 | 0.0259 (9) | 0.0222 (8) | 0.0194 (8) | 0.0043 (8) | 0.0005 (7) | 0.0026 (6) |
C15 | 0.0211 (8) | 0.0249 (8) | 0.0211 (8) | −0.0006 (7) | 0.0031 (7) | 0.0068 (7) |
C16 | 0.0189 (8) | 0.0168 (8) | 0.0219 (8) | −0.0030 (7) | −0.0019 (7) | 0.0025 (6) |
O1 | 0.0205 (7) | 0.0197 (6) | 0.0272 (6) | −0.0006 (5) | 0.0076 (5) | −0.0008 (5) |
O2 | 0.0254 (6) | 0.0149 (6) | 0.0204 (6) | −0.0018 (5) | 0.0014 (5) | −0.0049 (5) |
O3 | 0.0154 (5) | 0.0161 (5) | 0.0246 (6) | 0.0007 (5) | 0.0006 (5) | −0.0021 (4) |
O4 | 0.0214 (6) | 0.0126 (6) | 0.0256 (6) | −0.0028 (5) | 0.0000 (5) | −0.0004 (5) |
S1 | 0.01868 (19) | 0.0276 (2) | 0.01674 (19) | 0.00114 (18) | 0.00273 (16) | 0.00482 (15) |
S2 | 0.01470 (18) | 0.01144 (17) | 0.01797 (18) | −0.00017 (15) | 0.00043 (15) | 0.00026 (13) |
Cl | 0.0416 (3) | 0.0336 (2) | 0.0206 (2) | 0.0050 (2) | 0.00561 (18) | −0.00285 (18) |
N | 0.0140 (6) | 0.0128 (6) | 0.0186 (7) | −0.0027 (5) | −0.0002 (5) | 0.0000 (5) |
C1—O1 | 1.199 (2) | O4—S2 | 1.4337 (13) |
C1—O2 | 1.331 (2) | S2—N | 1.6306 (15) |
C1—C2 | 1.528 (2) | C2—H2 | 1.0000 |
C2—N | 1.472 (2) | C3—H3A | 0.9900 |
C2—C3 | 1.538 (2) | C3—H3B | 0.9900 |
C3—C4 | 1.522 (2) | C4—H4A | 0.9900 |
C4—S1 | 1.8117 (17) | C4—H4B | 0.9900 |
C5—S1 | 1.800 (2) | C5—H5A | 0.9800 |
C6—O2 | 1.443 (2) | C5—H5B | 0.9800 |
C11—C12 | 1.388 (2) | C5—H5C | 0.9800 |
C11—C16 | 1.398 (2) | C6—H6A | 0.9800 |
C11—S2 | 1.7667 (18) | C6—H6B | 0.9800 |
C12—C13 | 1.390 (2) | C6—H6C | 0.9800 |
C13—C14 | 1.391 (3) | C12—H12 | 0.9500 |
C14—C15 | 1.386 (3) | C13—H13 | 0.9500 |
C14—Cl | 1.7422 (18) | C15—H15 | 0.9500 |
C15—C16 | 1.384 (2) | C16—H16 | 0.9500 |
O3—S2 | 1.4327 (13) | N—H01 | 0.81 (3) |
O1—C1—O2 | 124.89 (16) | C2—C3—H3A | 109.2 |
O1—C1—C2 | 124.31 (15) | C4—C3—H3B | 109.2 |
O2—C1—C2 | 110.75 (14) | C2—C3—H3B | 109.2 |
N—C2—C1 | 110.74 (13) | H3A—C3—H3B | 107.9 |
N—C2—C3 | 109.73 (13) | C3—C4—H4A | 108.9 |
C1—C2—C3 | 108.97 (13) | S1—C4—H4A | 108.9 |
C4—C3—C2 | 111.92 (14) | C3—C4—H4B | 108.9 |
C3—C4—S1 | 113.52 (11) | S1—C4—H4B | 108.9 |
C12—C11—C16 | 121.41 (16) | H4A—C4—H4B | 107.7 |
C12—C11—S2 | 119.77 (13) | S1—C5—H5A | 109.5 |
C16—C11—S2 | 118.50 (13) | S1—C5—H5B | 109.5 |
C11—C12—C13 | 119.20 (17) | H5A—C5—H5B | 109.5 |
C12—C13—C14 | 118.92 (17) | S1—C5—H5C | 109.5 |
C15—C14—C13 | 122.17 (17) | H5A—C5—H5C | 109.5 |
C15—C14—Cl | 118.93 (14) | H5B—C5—H5C | 109.5 |
C13—C14—Cl | 118.90 (14) | O2—C6—H6A | 109.5 |
C16—C15—C14 | 118.88 (17) | O2—C6—H6B | 109.5 |
C15—C16—C11 | 119.40 (16) | H6A—C6—H6B | 109.5 |
C1—O2—C6 | 114.59 (14) | O2—C6—H6C | 109.5 |
C5—S1—C4 | 101.18 (9) | H6A—C6—H6C | 109.5 |
O3—S2—O4 | 120.36 (7) | H6B—C6—H6C | 109.5 |
O3—S2—N | 107.18 (7) | C11—C12—H12 | 120.4 |
O4—S2—N | 106.09 (7) | C13—C12—H12 | 120.4 |
O3—S2—C11 | 108.08 (8) | C12—C13—H13 | 120.5 |
O4—S2—C11 | 108.27 (8) | C14—C13—H13 | 120.5 |
N—S2—C11 | 106.00 (7) | C16—C15—H15 | 120.6 |
C2—N—S2 | 118.99 (11) | C14—C15—H15 | 120.6 |
N—C2—H2 | 109.1 | C15—C16—H16 | 120.3 |
C1—C2—H2 | 109.1 | C11—C16—H16 | 120.3 |
C3—C2—H2 | 109.1 | C2—N—H01 | 115.6 (19) |
C4—C3—H3A | 109.2 | S2—N—H01 | 110.5 (19) |
O1—C1—C2—N | −20.6 (2) | S2—C11—C16—C15 | −173.17 (13) |
O2—C1—C2—N | 161.73 (13) | O1—C1—O2—C6 | −3.3 (2) |
O1—C1—C2—C3 | 100.19 (18) | C2—C1—O2—C6 | 174.33 (14) |
O2—C1—C2—C3 | −77.48 (16) | C3—C4—S1—C5 | −69.77 (14) |
N—C2—C3—C4 | −67.63 (17) | C12—C11—S2—O3 | 29.75 (15) |
C1—C2—C3—C4 | 170.97 (14) | C16—C11—S2—O3 | −156.70 (13) |
C2—C3—C4—S1 | −176.06 (11) | C12—C11—S2—O4 | 161.63 (13) |
C16—C11—C12—C13 | −0.7 (3) | C16—C11—S2—O4 | −24.82 (15) |
S2—C11—C12—C13 | 172.62 (13) | C12—C11—S2—N | −84.90 (15) |
C11—C12—C13—C14 | −0.1 (3) | C16—C11—S2—N | 88.66 (14) |
C12—C13—C14—C15 | 1.5 (3) | C1—C2—N—S2 | −94.83 (15) |
C12—C13—C14—Cl | −177.99 (13) | C3—C2—N—S2 | 144.83 (12) |
C13—C14—C15—C16 | −2.0 (3) | O3—S2—N—C2 | −47.30 (14) |
Cl—C14—C15—C16 | 177.52 (14) | O4—S2—N—C2 | −177.08 (12) |
C14—C15—C16—C11 | 1.1 (3) | C11—S2—N—C2 | 67.96 (14) |
C12—C11—C16—C15 | 0.3 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N—H01···O3i | 0.81 (3) | 2.30 (3) | 3.1048 (18) | 169 (3) |
C2—H2···O1ii | 1.00 | 2.66 | 3.637 (2) | 166 |
C12—H12···O1ii | 0.95 | 2.37 | 3.315 (2) | 173 |
C3—H3B···O3iii | 0.99 | 2.66 | 3.635 (2) | 170 |
C5—H5B···S1iv | 0.98 | 2.97 | 3.892 (2) | 157 |
C5—H5C···S1i | 0.98 | 2.88 | 3.665 (2) | 138 |
Symmetry codes: (i) x−1, y, z; (ii) x+1, y, z; (iii) −x+2, y+1/2, −z+1/2; (iv) x−1/2, −y+3/2, −z. |
Experimental details
Crystal data | |
Chemical formula | C12H16ClNO4S2 |
Mr | 337.83 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 100 |
a, b, c (Å) | 5.1814 (3), 12.6089 (8), 23.2137 (13) |
V (Å3) | 1516.59 (16) |
Z | 4 |
Radiation type | Cu Kα |
µ (mm−1) | 4.92 |
Crystal size (mm) | 0.20 × 0.12 × 0.06 |
Data collection | |
Diffractometer | Oxford Diffraction Xcalibur Nova A diffractometer |
Absorption correction | Multi-scan (CrysAlis PRO; Oxford Diffraction, 2008) |
Tmin, Tmax | 0.548, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 14469, 3093, 3027 |
Rint | 0.033 |
(sin θ/λ)max (Å−1) | 0.628 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.025, 0.062, 1.04 |
No. of reflections | 3093 |
No. of parameters | 187 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.20, −0.35 |
Absolute structure | Flack (1983), 1250 Friedel pairs |
Absolute structure parameter | 0.005 (12) |
Computer programs: CrysAlis PRO (Oxford Diffraction, 2008), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), XP (Siemens, 1994).
D—H···A | D—H | H···A | D···A | D—H···A |
N—H01···O3i | 0.81 (3) | 2.30 (3) | 3.1048 (18) | 169 (3) |
C2—H2···O1ii | 1.00 | 2.66 | 3.637 (2) | 165.5 |
C12—H12···O1ii | 0.95 | 2.37 | 3.315 (2) | 172.9 |
C3—H3B···O3iii | 0.99 | 2.66 | 3.635 (2) | 170.3 |
C5—H5B···S1iv | 0.98 | 2.97 | 3.892 (2) | 156.6 |
C5—H5C···S1i | 0.98 | 2.88 | 3.665 (2) | 137.8 |
Symmetry codes: (i) x−1, y, z; (ii) x+1, y, z; (iii) −x+2, y+1/2, −z+1/2; (iv) x−1/2, −y+3/2, −z. |
Acknowledgements
The authors are grateful to the Higher Education Commission of Pakistan for financial support through project No. 20-674/R&D/06/1764 under the National Research Program for Universities.
References
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Esters have attracted widespread attention due to their applications in industry and as intermediates in the synthesis of heterocycles (Syed et al., 2009; Akhtar et al., 2008, 2007; Serwar et al., 2009). several types of pharmacological activities have also been associated with sulfonamides (Akhtar et al., 2008, Kashif et al., 2008). The title compound (I), a methionine derivative, was synthesized in our laboratory as an intermediate for onward conversion to 1,3,4-oxadiazole derivatives, and here we report its structure.
Molecular dimensions of (I) may be considered normal. The nitrogen atom displays a pyramidal geometry (Syed et al., 2009), lying 0.27 (1) Å out of the plane of its substituents. The molecule adopts the general shape of a thick disc (as is reflected in the short a axis length), with the ester group folded under the aromatic ring (C1···C11 3.374 (2) Å, C11—S2···C2—C1 - 19.3 (1)°). The molecules are connected in chains parallel to the a axis by the classical hydrogen bond N—H01···O3 (H···O 2.30 (3) Å), supported by the "weak" hydrogen bonds H2···O1, H12···O1 (a bifurcated system) and H5C···S1 (H···X 2.66, 2.37, 2.88 Å respectively). Symmetry operators for all these H bonds involve a axis translation.