organic compounds
2-(4-Fluorophenyl)-3-isopropylsulfinyl-5,6-methylenedioxy-1-benzofuran
aDepartment of Chemistry, Dongeui University, San 24 Kaya-dong Busanjin-gu, Busan 614-714, Republic of Korea, and bDepartment of Chemistry, Pukyong National University, 599-1 Daeyeon 3-dong, Nam-gu, Busan 608-737, Republic of Korea
*Correspondence e-mail: uklee@pknu.ac.kr
In the title compound, C18H15FO4S, the fluorobenzene ring makes a dihedral angle of 4.3 (1)° with the mean plane of the benzofuran fragment. In the crystal, molecules are linked by weak intermolecular C—H⋯O hydrogen bonds. The O atom of the sulfinyl group is disordered over two orientations, with site-occupancy factors of 0.940 (3) and 0.060 (3).
Related literature
For the pharmacological activity of benzofuran compounds, see: Aslam et al. (2009); Galal et al. (2009); Khan et al. (2005). For natural products with benzofuran rings, see: Akgul & Anil (2003); Soekamto et al. (2003). For the crystal structures of related compounds, see: Choi et al. (2010a,b).
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 (Farrugia, 1997) and DIAMOND (Brandenburg, 1998); software used to prepare material for publication: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536811051178/fj2487sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811051178/fj2487Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536811051178/fj2487Isup3.cml
77% 3-chloroperoxybenzoic acid (224 mg, 1.0 mmol) was added in small portions to a stirred solution of 2-(4-fluorophenyl)-3-isopropylsulfanyl-5,6-methylenedioxy-1-benzofuran (251 mg, 0.8 mmol) in dichloromethane (30 mL) at 273 K. After being stirred at room temperature for 3h, the mixture was washed with saturated sodium bicarbonate solution and the organic layer was separated, dried over magnesium sulfate, filtered and concentrated at reduced pressure. The residue was purified by
(hexane–ethyl acetate, 1:2 v/v) to afford the title compound as a colorless solid [yield 71%, m.p. 437–438 K; Rf = 0.55 (hexane–ethyl acetate, 1:2 v/v)]. Single crystals suitable for X-ray diffraction were prepared by slow evaporation of a solution of the title compound in ethyl acetate at room temperature.All H atoms were positioned geometrically and refined using a riding model, with C—H = 0.95 Å for the aryl, 1.00 Å for the methine, 0.99 Å for the methylene, and 0.98 Å for the methyl H atoms. Uiso(H) =1.2Ueq(C) for the aryl, methine, and methylene H atoms, and 1.5Ueq(C) for the methyl H atoms. The O atom of sulfinyl group is disordered over two positions with site-ccupancy factors, from
of 0.940 (3) (part A) and 0.060 (3) (part B). The distance of S—O sets was restrained to 0.001 Å using command SADI and DELU.Recently, substituted benzofuran derivatives have drawn much attention due to their valuable pharmacological properties such as antibacterial and antifungal, antitumor and antiviral, and antimicrobial activities (Aslam et al., 2009, Galal et al., 2009, Khan et al., 2005). These benzofuran derivatives occur in a wide range of natural products (Akgul & Anil, 2003; Soekamto et al., 2003). As a part of our ongoing study of 5,6-(methylenedioxy)benzofuran derivatives containing either 3-methylsulfinyl (Choi et al., 2010a) or 3-ethylsulfinyl (Choi et al., 2010b) substituents, we report herein the
of the title compound.In the title molecule (Fig. 1), the benzofuran unit is essentially planar, with a mean deviation of 0.006 (1) Å from the least-squares plane defined by the nine constituent atoms. The dihedral angle formed by the 4-fluorophenyl ring and the mean plane of the benzofuran fragment is 4.3 (1)°. The O atom of the sulfinyl group is disordered over two positions with site-occupancy factors, from ═O unit (Table 1, first entry & Fig. 2), and the second one between a methyl H atom of the isopropyl group and the O atom of the S═O unit (Table 1, second entry & Fig. 2).
of 0.940 (3) (Part A) and 0.060 (3) (part B). The crystal packing is stabilized by weak intermolecular C—H···O hydrogen bonds; the first one between a methylene H atom and the O atom of the SFor the pharmacological activity of benzofuran compounds, see: Aslam et al. (2009); Galal et al. (2009); Khan et al. (2005). For natural products with benzofuran rings, see: Akgul & Anil (2003); Soekamto et al. (2003). For the crystal structures of related compounds, see: Choi et al. (2010a,b).
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 (Farrugia, 1997) and DIAMOND (Brandenburg, 1998); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).C18H15FO4S | Z = 2 |
Mr = 346.36 | F(000) = 360 |
Triclinic, P1 | Dx = 1.509 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 6.2519 (1) Å | Cell parameters from 7633 reflections |
b = 9.6773 (2) Å | θ = 2.6–27.5° |
c = 12.9267 (2) Å | µ = 0.24 mm−1 |
α = 90.122 (1)° | T = 173 K |
β = 94.726 (1)° | Block, colourless |
γ = 101.920 (1)° | 0.45 × 0.21 × 0.14 mm |
V = 762.47 (2) Å3 |
Bruker SMART APEXII CCD diffractometer | 3488 independent reflections |
Radiation source: rotating anode | 3171 reflections with I > 2σ(I) |
Graphite multilayer monochromator | Rint = 0.024 |
Detector resolution: 10.0 pixels mm-1 | θmax = 27.5°, θmin = 1.6° |
φ and ω scans | h = −7→8 |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | k = −12→12 |
Tmin = 0.898, Tmax = 0.967 | l = −15→16 |
13552 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)] = 0.039 | Hydrogen site location: difference Fourier map |
wR(F2) = 0.101 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0457P)2 + 0.4198P] where P = (Fo2 + 2Fc2)/3 |
3488 reflections | (Δ/σ)max < 0.001 |
229 parameters | Δρmax = 0.56 e Å−3 |
4 restraints | Δρmin = −0.40 e Å−3 |
C18H15FO4S | γ = 101.920 (1)° |
Mr = 346.36 | V = 762.47 (2) Å3 |
Triclinic, P1 | Z = 2 |
a = 6.2519 (1) Å | Mo Kα radiation |
b = 9.6773 (2) Å | µ = 0.24 mm−1 |
c = 12.9267 (2) Å | T = 173 K |
α = 90.122 (1)° | 0.45 × 0.21 × 0.14 mm |
β = 94.726 (1)° |
Bruker SMART APEXII CCD diffractometer | 3488 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | 3171 reflections with I > 2σ(I) |
Tmin = 0.898, Tmax = 0.967 | Rint = 0.024 |
13552 measured reflections |
R[F2 > 2σ(F2)] = 0.039 | 4 restraints |
wR(F2) = 0.101 | H-atom parameters constrained |
S = 1.06 | Δρmax = 0.56 e Å−3 |
3488 reflections | Δρmin = −0.40 e Å−3 |
229 parameters |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 | Occ. (<1) | |
S1 | 0.15386 (6) | 0.36031 (4) | 0.14314 (3) | 0.02733 (12) | |
F1 | −0.43070 (18) | 0.35212 (13) | 0.57633 (8) | 0.0438 (3) | |
O1 | 0.31016 (17) | 0.12210 (11) | 0.37742 (8) | 0.0264 (2) | |
O2 | 0.8622 (2) | −0.09128 (13) | 0.23234 (10) | 0.0377 (3) | |
O3 | 0.8308 (2) | 0.03336 (14) | 0.08091 (10) | 0.0415 (3) | |
O4A | 0.2282 (2) | 0.32964 (14) | 0.04204 (9) | 0.0358 (4) | 0.940 (3) |
O4B | −0.0806 (7) | 0.3600 (18) | 0.1198 (15) | 0.030 (4) | 0.060 (3) |
C1 | 0.2601 (2) | 0.25039 (15) | 0.23544 (11) | 0.0241 (3) | |
C2 | 0.4209 (2) | 0.16817 (15) | 0.21565 (12) | 0.0245 (3) | |
C3 | 0.5457 (3) | 0.15352 (16) | 0.13162 (12) | 0.0282 (3) | |
H3 | 0.5335 | 0.2030 | 0.0687 | 0.034* | |
C4 | 0.6853 (3) | 0.06270 (17) | 0.14767 (13) | 0.0289 (3) | |
C5 | 0.9256 (3) | −0.07578 (18) | 0.12790 (14) | 0.0343 (4) | |
H5A | 1.0874 | −0.0506 | 0.1285 | 0.041* | |
H5B | 0.8725 | −0.1656 | 0.0882 | 0.041* | |
C6 | 0.7051 (3) | −0.01235 (16) | 0.23908 (13) | 0.0279 (3) | |
C7 | 0.5854 (3) | −0.00188 (16) | 0.32195 (12) | 0.0278 (3) | |
H7 | 0.5975 | −0.0530 | 0.3841 | 0.033* | |
C8 | 0.4441 (2) | 0.09170 (15) | 0.30558 (12) | 0.0248 (3) | |
C9 | 0.1973 (2) | 0.21924 (15) | 0.33327 (12) | 0.0247 (3) | |
C10 | 0.0418 (2) | 0.26129 (16) | 0.39856 (12) | 0.0249 (3) | |
C11 | 0.0148 (3) | 0.20327 (18) | 0.49683 (13) | 0.0308 (3) | |
H11 | 0.1053 | 0.1409 | 0.5222 | 0.037* | |
C12 | −0.1410 (3) | 0.23498 (19) | 0.55767 (13) | 0.0343 (4) | |
H12 | −0.1584 | 0.1954 | 0.6244 | 0.041* | |
C13 | −0.2699 (3) | 0.32515 (18) | 0.51912 (13) | 0.0309 (3) | |
C14 | −0.2463 (3) | 0.38780 (18) | 0.42458 (13) | 0.0311 (3) | |
H14 | −0.3354 | 0.4518 | 0.4010 | 0.037* | |
C15 | −0.0895 (3) | 0.35560 (17) | 0.36425 (12) | 0.0294 (3) | |
H15 | −0.0709 | 0.3982 | 0.2986 | 0.035* | |
C16 | 0.3187 (3) | 0.53086 (16) | 0.19013 (13) | 0.0289 (3) | |
H16 | 0.3011 | 0.5410 | 0.2658 | 0.035* | |
C17 | 0.2245 (4) | 0.6446 (2) | 0.1325 (2) | 0.0562 (6) | |
H17A | 0.3062 | 0.7380 | 0.1572 | 0.084* | |
H17B | 0.0697 | 0.6346 | 0.1452 | 0.084* | |
H17C | 0.2369 | 0.6346 | 0.0579 | 0.084* | |
C18 | 0.5593 (3) | 0.54184 (19) | 0.17658 (15) | 0.0365 (4) | |
H18A | 0.5814 | 0.5424 | 0.1024 | 0.055* | |
H18B | 0.6082 | 0.4608 | 0.2087 | 0.055* | |
H18C | 0.6443 | 0.6294 | 0.2099 | 0.055* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0300 (2) | 0.0256 (2) | 0.0255 (2) | 0.00633 (14) | −0.00408 (14) | 0.00327 (14) |
F1 | 0.0410 (6) | 0.0612 (7) | 0.0347 (6) | 0.0199 (5) | 0.0117 (4) | −0.0051 (5) |
O1 | 0.0268 (5) | 0.0275 (5) | 0.0268 (5) | 0.0092 (4) | 0.0047 (4) | 0.0070 (4) |
O2 | 0.0415 (7) | 0.0373 (7) | 0.0412 (7) | 0.0215 (5) | 0.0103 (5) | 0.0049 (5) |
O3 | 0.0502 (8) | 0.0434 (7) | 0.0398 (7) | 0.0246 (6) | 0.0185 (6) | 0.0069 (5) |
O4A | 0.0480 (8) | 0.0365 (7) | 0.0234 (6) | 0.0108 (6) | 0.0003 (5) | 0.0014 (5) |
O4B | 0.031 (3) | 0.022 (9) | 0.037 (10) | 0.006 (7) | −0.004 (4) | 0.018 (7) |
C1 | 0.0246 (7) | 0.0230 (7) | 0.0245 (7) | 0.0049 (5) | 0.0009 (5) | 0.0031 (5) |
C2 | 0.0245 (7) | 0.0216 (7) | 0.0266 (7) | 0.0035 (5) | 0.0011 (6) | 0.0024 (5) |
C3 | 0.0311 (8) | 0.0276 (7) | 0.0270 (8) | 0.0072 (6) | 0.0051 (6) | 0.0033 (6) |
C4 | 0.0299 (8) | 0.0261 (7) | 0.0308 (8) | 0.0049 (6) | 0.0063 (6) | −0.0013 (6) |
C5 | 0.0355 (9) | 0.0305 (8) | 0.0390 (9) | 0.0108 (7) | 0.0053 (7) | −0.0041 (7) |
C6 | 0.0271 (7) | 0.0216 (7) | 0.0354 (8) | 0.0064 (6) | 0.0013 (6) | −0.0002 (6) |
C7 | 0.0281 (8) | 0.0250 (7) | 0.0309 (8) | 0.0073 (6) | 0.0022 (6) | 0.0053 (6) |
C8 | 0.0234 (7) | 0.0234 (7) | 0.0272 (7) | 0.0038 (5) | 0.0033 (6) | 0.0020 (6) |
C9 | 0.0233 (7) | 0.0227 (7) | 0.0277 (7) | 0.0050 (5) | −0.0003 (6) | 0.0045 (6) |
C10 | 0.0224 (7) | 0.0245 (7) | 0.0268 (7) | 0.0028 (5) | 0.0018 (5) | 0.0016 (6) |
C11 | 0.0322 (8) | 0.0335 (8) | 0.0285 (8) | 0.0106 (6) | 0.0027 (6) | 0.0053 (6) |
C12 | 0.0388 (9) | 0.0406 (9) | 0.0247 (8) | 0.0093 (7) | 0.0060 (7) | 0.0051 (7) |
C13 | 0.0273 (8) | 0.0370 (8) | 0.0285 (8) | 0.0063 (6) | 0.0045 (6) | −0.0073 (6) |
C14 | 0.0284 (8) | 0.0341 (8) | 0.0325 (8) | 0.0110 (6) | 0.0005 (6) | −0.0001 (6) |
C15 | 0.0284 (8) | 0.0329 (8) | 0.0284 (8) | 0.0091 (6) | 0.0037 (6) | 0.0057 (6) |
C16 | 0.0341 (8) | 0.0233 (7) | 0.0292 (8) | 0.0061 (6) | 0.0008 (6) | 0.0002 (6) |
C17 | 0.0508 (12) | 0.0306 (9) | 0.0863 (17) | 0.0127 (8) | −0.0105 (11) | 0.0137 (10) |
C18 | 0.0325 (9) | 0.0340 (9) | 0.0409 (9) | 0.0021 (7) | 0.0025 (7) | 0.0068 (7) |
S1—O4B | 1.4716 (17) | C7—H7 | 0.9500 |
S1—O4A | 1.4724 (13) | C9—C10 | 1.456 (2) |
S1—C1 | 1.7783 (15) | C10—C15 | 1.398 (2) |
S1—C16 | 1.8290 (16) | C10—C11 | 1.399 (2) |
F1—C13 | 1.3623 (18) | C11—C12 | 1.382 (2) |
O1—C8 | 1.3707 (18) | C11—H11 | 0.9500 |
O1—C9 | 1.3847 (17) | C12—C13 | 1.373 (2) |
O2—C6 | 1.3712 (19) | C12—H12 | 0.9500 |
O2—C5 | 1.437 (2) | C13—C14 | 1.371 (2) |
O3—C4 | 1.3740 (19) | C14—C15 | 1.384 (2) |
O3—C5 | 1.428 (2) | C14—H14 | 0.9500 |
C1—C9 | 1.371 (2) | C15—H15 | 0.9500 |
C1—C2 | 1.443 (2) | C16—C18 | 1.510 (2) |
C2—C8 | 1.393 (2) | C16—C17 | 1.521 (2) |
C2—C3 | 1.412 (2) | C16—H16 | 1.0000 |
C3—C4 | 1.366 (2) | C17—H17A | 0.9800 |
C3—H3 | 0.9500 | C17—H17B | 0.9800 |
C4—C6 | 1.398 (2) | C17—H17C | 0.9800 |
C5—H5A | 0.9900 | C18—H18A | 0.9800 |
C5—H5B | 0.9900 | C18—H18B | 0.9800 |
C6—C7 | 1.371 (2) | C18—H18C | 0.9800 |
C7—C8 | 1.395 (2) | ||
O4B—S1—O4A | 104.0 (8) | O1—C9—C10 | 114.53 (13) |
O4B—S1—C1 | 124.7 (6) | C15—C10—C11 | 118.20 (15) |
O4A—S1—C1 | 107.07 (7) | C15—C10—C9 | 121.63 (14) |
O4B—S1—C16 | 114.1 (7) | C11—C10—C9 | 120.13 (14) |
O4A—S1—C16 | 107.44 (8) | C12—C11—C10 | 121.20 (15) |
C1—S1—C16 | 98.56 (7) | C12—C11—H11 | 119.4 |
C8—O1—C9 | 107.04 (11) | C10—C11—H11 | 119.4 |
C6—O2—C5 | 105.72 (13) | C13—C12—C11 | 118.27 (15) |
C4—O3—C5 | 106.07 (13) | C13—C12—H12 | 120.9 |
C9—C1—C2 | 107.40 (13) | C11—C12—H12 | 120.9 |
C9—C1—S1 | 127.89 (12) | F1—C13—C14 | 118.35 (15) |
C2—C1—S1 | 124.56 (11) | F1—C13—C12 | 118.79 (15) |
C8—C2—C3 | 120.03 (14) | C14—C13—C12 | 122.85 (15) |
C8—C2—C1 | 105.09 (13) | C13—C14—C15 | 118.45 (15) |
C3—C2—C1 | 134.88 (14) | C13—C14—H14 | 120.8 |
C4—C3—C2 | 114.84 (14) | C15—C14—H14 | 120.8 |
C4—C3—H3 | 122.6 | C14—C15—C10 | 120.98 (15) |
C2—C3—H3 | 122.6 | C14—C15—H15 | 119.5 |
C3—C4—O3 | 126.86 (15) | C10—C15—H15 | 119.5 |
C3—C4—C6 | 123.73 (15) | C18—C16—C17 | 112.60 (15) |
O3—C4—C6 | 109.37 (14) | C18—C16—S1 | 111.75 (12) |
O3—C5—O2 | 107.97 (13) | C17—C16—S1 | 107.09 (12) |
O3—C5—H5A | 110.1 | C18—C16—H16 | 108.4 |
O2—C5—H5A | 110.1 | C17—C16—H16 | 108.4 |
O3—C5—H5B | 110.1 | S1—C16—H16 | 108.4 |
O2—C5—H5B | 110.1 | C16—C17—H17A | 109.5 |
H5A—C5—H5B | 108.4 | C16—C17—H17B | 109.5 |
O2—C6—C7 | 127.12 (15) | H17A—C17—H17B | 109.5 |
O2—C6—C4 | 109.74 (14) | C16—C17—H17C | 109.5 |
C7—C6—C4 | 123.13 (14) | H17A—C17—H17C | 109.5 |
C6—C7—C8 | 113.00 (14) | H17B—C17—H17C | 109.5 |
C6—C7—H7 | 123.5 | C16—C18—H18A | 109.5 |
C8—C7—H7 | 123.5 | C16—C18—H18B | 109.5 |
O1—C8—C2 | 110.64 (13) | H18A—C18—H18B | 109.5 |
O1—C8—C7 | 124.08 (13) | C16—C18—H18C | 109.5 |
C2—C8—C7 | 125.27 (14) | H18A—C18—H18C | 109.5 |
C1—C9—O1 | 109.82 (13) | H18B—C18—H18C | 109.5 |
C1—C9—C10 | 135.63 (14) | ||
O4B—S1—C1—C9 | −43.3 (10) | C3—C2—C8—C7 | 0.3 (2) |
O4A—S1—C1—C9 | −164.61 (14) | C1—C2—C8—C7 | −179.36 (14) |
C16—S1—C1—C9 | 84.09 (15) | C6—C7—C8—O1 | −178.87 (13) |
O4B—S1—C1—C2 | 131.6 (10) | C6—C7—C8—C2 | 0.3 (2) |
O4A—S1—C1—C2 | 10.31 (15) | C2—C1—C9—O1 | 0.33 (16) |
C16—S1—C1—C2 | −100.99 (13) | S1—C1—C9—O1 | 175.95 (10) |
C9—C1—C2—C8 | −0.13 (16) | C2—C1—C9—C10 | −178.34 (16) |
S1—C1—C2—C8 | −175.93 (11) | S1—C1—C9—C10 | −2.7 (3) |
C9—C1—C2—C3 | −179.69 (16) | C8—O1—C9—C1 | −0.41 (16) |
S1—C1—C2—C3 | 4.5 (3) | C8—O1—C9—C10 | 178.57 (12) |
C8—C2—C3—C4 | −0.7 (2) | C1—C9—C10—C15 | 0.4 (3) |
C1—C2—C3—C4 | 178.84 (16) | O1—C9—C10—C15 | −178.21 (13) |
C2—C3—C4—O3 | −177.24 (15) | C1—C9—C10—C11 | 178.06 (17) |
C2—C3—C4—C6 | 0.6 (2) | O1—C9—C10—C11 | −0.6 (2) |
C5—O3—C4—C3 | −175.24 (16) | C15—C10—C11—C12 | 1.7 (2) |
C5—O3—C4—C6 | 6.70 (18) | C9—C10—C11—C12 | −176.06 (15) |
C4—O3—C5—O2 | −10.48 (18) | C10—C11—C12—C13 | 0.1 (3) |
C6—O2—C5—O3 | 10.29 (17) | C11—C12—C13—F1 | 177.04 (15) |
C5—O2—C6—C7 | 175.46 (16) | C11—C12—C13—C14 | −1.9 (3) |
C5—O2—C6—C4 | −6.21 (17) | F1—C13—C14—C15 | −177.15 (14) |
C3—C4—C6—O2 | −178.41 (15) | C12—C13—C14—C15 | 1.8 (3) |
O3—C4—C6—O2 | −0.28 (18) | C13—C14—C15—C10 | 0.1 (2) |
C3—C4—C6—C7 | 0.0 (3) | C11—C10—C15—C14 | −1.8 (2) |
O3—C4—C6—C7 | 178.12 (14) | C9—C10—C15—C14 | 175.91 (14) |
O2—C6—C7—C8 | 177.70 (14) | O4B—S1—C16—C18 | −159.6 (8) |
C4—C6—C7—C8 | −0.4 (2) | O4A—S1—C16—C18 | −44.95 (14) |
C9—O1—C8—C2 | 0.32 (16) | C1—S1—C16—C18 | 66.05 (13) |
C9—O1—C8—C7 | 179.57 (14) | O4B—S1—C16—C17 | −35.9 (8) |
C3—C2—C8—O1 | 179.52 (13) | O4A—S1—C16—C17 | 78.81 (15) |
C1—C2—C8—O1 | −0.12 (16) | C1—S1—C16—C17 | −170.20 (14) |
D—H···A | D—H | H···A | D···A | D—H···A |
C5—H5B···O4Ai | 0.99 | 2.27 | 3.231 (2) | 163 |
C18—H18A···O4Aii | 0.98 | 2.49 | 3.354 (2) | 147 |
Symmetry codes: (i) −x+1, −y, −z; (ii) −x+1, −y+1, −z. |
Experimental details
Crystal data | |
Chemical formula | C18H15FO4S |
Mr | 346.36 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 173 |
a, b, c (Å) | 6.2519 (1), 9.6773 (2), 12.9267 (2) |
α, β, γ (°) | 90.122 (1), 94.726 (1), 101.920 (1) |
V (Å3) | 762.47 (2) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.24 |
Crystal size (mm) | 0.45 × 0.21 × 0.14 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2009) |
Tmin, Tmax | 0.898, 0.967 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 13552, 3488, 3171 |
Rint | 0.024 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.039, 0.101, 1.06 |
No. of reflections | 3488 |
No. of parameters | 229 |
No. of restraints | 4 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.56, −0.40 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 1998).
D—H···A | D—H | H···A | D···A | D—H···A |
C5—H5B···O4Ai | 0.99 | 2.27 | 3.231 (2) | 163 |
C18—H18A···O4Aii | 0.98 | 2.49 | 3.354 (2) | 147 |
Symmetry codes: (i) −x+1, −y, −z; (ii) −x+1, −y+1, −z. |
References
Akgul, Y. Y. & Anil, H. (2003). Phytochemistry, 63, 939–943. Web of Science CrossRef PubMed CAS Google Scholar
Aslam, S. N., Stevenson, P. C., Kokubun, T. & Hall, D. R. (2009). Microbiol. Res. 164, 191–195. Web of Science CrossRef PubMed CAS Google Scholar
Brandenburg, K. (1998). DIAMOND. Crystal Impact GbR, Bonn, Germany. Google Scholar
Bruker (2009). APEX2, SADABS and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Choi, H. D., Seo, P. J., Son, B. W. & Lee, U. (2010a). Acta Cryst. E66, o605. Web of Science CSD CrossRef IUCr Journals Google Scholar
Choi, H. D., Seo, P. J., Son, B. W. & Lee, U. (2010b). Acta Cryst. E66, o1296. Web of Science CSD CrossRef IUCr Journals Google Scholar
Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565. CrossRef IUCr Journals Google Scholar
Galal, S. A., Abd El-All, A. S., Abdallah, M. M. & El-Diwani, H. I. (2009). Bioorg. Med. Chem. Lett. 19, 2420–2428. Web of Science CrossRef PubMed CAS Google Scholar
Khan, M. W., Alam, M. J., Rashid, M. A. & Chowdhury, R. (2005). Bioorg. Med. Chem. 13, 4796–4805. Web of Science CrossRef PubMed CAS Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Soekamto, N. H., Achmad, S. A., Ghisalberti, E. L., Hakim, E. H. & Syah, Y. M. (2003). Phytochemistry, 64, 831–834. 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.
Recently, substituted benzofuran derivatives have drawn much attention due to their valuable pharmacological properties such as antibacterial and antifungal, antitumor and antiviral, and antimicrobial activities (Aslam et al., 2009, Galal et al., 2009, Khan et al., 2005). These benzofuran derivatives occur in a wide range of natural products (Akgul & Anil, 2003; Soekamto et al., 2003). As a part of our ongoing study of 5,6-(methylenedioxy)benzofuran derivatives containing either 3-methylsulfinyl (Choi et al., 2010a) or 3-ethylsulfinyl (Choi et al., 2010b) substituents, we report herein the crystal structure of the title compound.
In the title molecule (Fig. 1), the benzofuran unit is essentially planar, with a mean deviation of 0.006 (1) Å from the least-squares plane defined by the nine constituent atoms. The dihedral angle formed by the 4-fluorophenyl ring and the mean plane of the benzofuran fragment is 4.3 (1)°. The O atom of the sulfinyl group is disordered over two positions with site-occupancy factors, from refinement, of 0.940 (3) (Part A) and 0.060 (3) (part B). The crystal packing is stabilized by weak intermolecular C—H···O hydrogen bonds; the first one between a methylene H atom and the O atom of the S═O unit (Table 1, first entry & Fig. 2), and the second one between a methyl H atom of the isopropyl group and the O atom of the S═O unit (Table 1, second entry & Fig. 2).