organic compounds
2-(4-Fluorophenyl)-5,6-methylenedioxy-3-methylsulfinyl-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, C16H11FO4S, the O atom and the methyl group of the methylsulfinyl substituent are located on opposite sides of the mean plane through the 5,6-(methylenedioxy)benzofuran fragment. The 4-fluorophenyl ring is rotated out of the 5,6-(methylenedioxy)benzofuran plane, making a dihedral angle of 29.90 (6)°. In the both intermolecular C—H⋯O hydrogen bonds link the molecules into centrosymmetric dimers. The combination of C—H⋯O hydrogen bonds result in chains running along [1].
Related literature
For the structures of similar 5,6-methylenedioxy-1-benzofuran derivatives, see: Choi et al. (2007, 2009). For the pharmacological properties of benzofuran compounds, see: Howlett et al. (1999); Twyman & Allsop (1999). For natural products with benzofuran rings, see: Akgul & Anil (2003); von Reuss & König (2004).
Experimental
Crystal data
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Refinement
|
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
10.1107/S1600536810004745/kj2140sup1.cif
contains datablock I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536810004745/kj2140Isup2.hkl
77% 3-chloroperoxybenzoic acid (247 mg, 1.1 mmol) was added in small portions to a stirred solution of 2-(4-fluorophenyl)-5,6-methylenedioxy-3-methylsulfanyl-1-benzofuran (302 mg, 1.0 mmol) in dichloromethane (30 ml) at 273 K. After being stirred at room temperature for 2h, the mixture was washed with saturated sodium bicarbonate solution and the organic layer was separated, dried over magnesium sulfate, filtered and concentrated in vacuum. The residue was purified by
(hexane–ethyl acetate, 1:1 v/v) to afford the title compound as a colorless solid [yield 71%, m.p. 488–489 K; Rf = 0.51 (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 chloroform at room temperature.All H atoms were geometrically positioned and refined using a riding model, with C—H = 0.93 Å for aryl, 0.97 Å for methylene, and 0.96 Å for methyl H atoms. Uiso(H) = 1.2Ueq(C) for aryl and methylene H atoms, and 1.5Ueq(C) for methyl 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 (Farrugia, 1997) and DIAMOND (Brandenburg, 1998); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).C16H11FO4S | Z = 2 |
Mr = 318.31 | F(000) = 328 |
Triclinic, P1 | Dx = 1.589 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.0283 (7) Å | Cell parameters from 4336 reflections |
b = 8.4072 (7) Å | θ = 2.6–27.4° |
c = 10.6611 (9) Å | µ = 0.27 mm−1 |
α = 85.735 (1)° | T = 173 K |
β = 86.319 (1)° | Block, colourless |
γ = 68.110 (1)° | 0.40 × 0.40 × 0.20 mm |
V = 665.33 (10) Å3 |
Bruker SMART APEXII CCD diffractometer | 2325 independent reflections |
Radiation source: Rotating Anode | 2153 reflections with I > 2σ(I) |
HELIOS monochromator | Rint = 0.036 |
Detector resolution: 10.0 pixels mm-1 | θmax = 25.0°, θmin = 1.9° |
ϕ and ω scans | h = −9→9 |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | k = −9→9 |
Tmin = 0.899, Tmax = 0.948 | l = −12→12 |
4954 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)] = 0.033 | Hydrogen site location: difference Fourier map |
wR(F2) = 0.096 | H-atom parameters constrained |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0477P)2 + 0.4337P] where P = (Fo2 + 2Fc2)/3 |
2325 reflections | (Δ/σ)max < 0.001 |
200 parameters | Δρmax = 0.76 e Å−3 |
0 restraints | Δρmin = −0.34 e Å−3 |
C16H11FO4S | γ = 68.110 (1)° |
Mr = 318.31 | V = 665.33 (10) Å3 |
Triclinic, P1 | Z = 2 |
a = 8.0283 (7) Å | Mo Kα radiation |
b = 8.4072 (7) Å | µ = 0.27 mm−1 |
c = 10.6611 (9) Å | T = 173 K |
α = 85.735 (1)° | 0.40 × 0.40 × 0.20 mm |
β = 86.319 (1)° |
Bruker SMART APEXII CCD diffractometer | 2325 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | 2153 reflections with I > 2σ(I) |
Tmin = 0.899, Tmax = 0.948 | Rint = 0.036 |
4954 measured reflections |
R[F2 > 2σ(F2)] = 0.033 | 0 restraints |
wR(F2) = 0.096 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.76 e Å−3 |
2325 reflections | Δρmin = −0.34 e Å−3 |
200 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 | ||
S | 0.80463 (5) | 0.18763 (6) | 0.60869 (4) | 0.02335 (16) | |
F | 0.68941 (16) | −0.01363 (16) | 0.02490 (11) | 0.0385 (3) | |
O1 | 0.29585 (16) | 0.35961 (16) | 0.51174 (11) | 0.0228 (3) | |
O2 | 0.25335 (17) | 0.57506 (17) | 0.98364 (12) | 0.0292 (3) | |
O3 | −0.01602 (17) | 0.65674 (17) | 0.88470 (12) | 0.0285 (3) | |
O4 | 0.84924 (18) | 0.30301 (18) | 0.68884 (15) | 0.0372 (4) | |
C1 | 0.5684 (2) | 0.2707 (2) | 0.59585 (16) | 0.0206 (4) | |
C2 | 0.4380 (2) | 0.3671 (2) | 0.68856 (16) | 0.0204 (4) | |
C3 | 0.4467 (2) | 0.4134 (2) | 0.81182 (16) | 0.0225 (4) | |
H3 | 0.5537 | 0.3792 | 0.8537 | 0.027* | |
C4 | 0.2853 (2) | 0.5124 (2) | 0.86443 (16) | 0.0229 (4) | |
C5 | 0.0711 (3) | 0.6920 (2) | 0.98677 (18) | 0.0289 (4) | |
H5A | 0.0661 | 0.8093 | 0.9776 | 0.035* | |
H5B | 0.0117 | 0.6769 | 1.0664 | 0.035* | |
C6 | 0.1218 (2) | 0.5638 (2) | 0.80438 (17) | 0.0222 (4) | |
C7 | 0.1075 (2) | 0.5200 (2) | 0.68512 (17) | 0.0237 (4) | |
H7 | −0.0006 | 0.5531 | 0.6449 | 0.028* | |
C8 | 0.2736 (2) | 0.4202 (2) | 0.63084 (16) | 0.0209 (4) | |
C9 | 0.4775 (2) | 0.2695 (2) | 0.49235 (16) | 0.0214 (4) | |
C10 | 0.5313 (2) | 0.1926 (2) | 0.37027 (16) | 0.0214 (4) | |
C11 | 0.4330 (2) | 0.2717 (2) | 0.26424 (16) | 0.0227 (4) | |
H11 | 0.3323 | 0.3721 | 0.2719 | 0.027* | |
C12 | 0.4845 (2) | 0.2015 (2) | 0.14773 (17) | 0.0251 (4) | |
H12 | 0.4192 | 0.2530 | 0.0769 | 0.030* | |
C13 | 0.6347 (2) | 0.0537 (2) | 0.13962 (17) | 0.0259 (4) | |
C14 | 0.7337 (2) | −0.0306 (2) | 0.24219 (17) | 0.0272 (4) | |
H14 | 0.8334 | −0.1315 | 0.2336 | 0.033* | |
C15 | 0.6797 (2) | 0.0397 (2) | 0.35841 (17) | 0.0258 (4) | |
H15 | 0.7430 | −0.0156 | 0.4292 | 0.031* | |
C16 | 0.8251 (3) | −0.0009 (3) | 0.70708 (19) | 0.0321 (4) | |
H16A | 0.9492 | −0.0629 | 0.7248 | 0.048* | |
H16B | 0.7803 | −0.0726 | 0.6646 | 0.048* | |
H16C | 0.7568 | 0.0320 | 0.7845 | 0.048* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S | 0.0165 (2) | 0.0224 (3) | 0.0292 (3) | −0.00522 (18) | −0.00198 (17) | 0.00089 (18) |
F | 0.0361 (7) | 0.0477 (7) | 0.0256 (6) | −0.0067 (6) | 0.0027 (5) | −0.0155 (5) |
O1 | 0.0185 (6) | 0.0260 (7) | 0.0216 (6) | −0.0047 (5) | −0.0023 (5) | −0.0047 (5) |
O2 | 0.0273 (7) | 0.0341 (7) | 0.0212 (6) | −0.0043 (6) | −0.0010 (5) | −0.0076 (5) |
O3 | 0.0223 (7) | 0.0311 (7) | 0.0269 (7) | −0.0034 (5) | 0.0030 (5) | −0.0071 (5) |
O4 | 0.0264 (7) | 0.0293 (8) | 0.0570 (10) | −0.0088 (6) | −0.0137 (6) | −0.0068 (7) |
C1 | 0.0175 (8) | 0.0201 (8) | 0.0224 (9) | −0.0050 (7) | −0.0004 (7) | −0.0011 (7) |
C2 | 0.0193 (8) | 0.0197 (8) | 0.0217 (8) | −0.0065 (7) | −0.0012 (7) | −0.0004 (7) |
C3 | 0.0210 (9) | 0.0248 (9) | 0.0218 (9) | −0.0082 (7) | −0.0034 (7) | −0.0004 (7) |
C4 | 0.0262 (9) | 0.0227 (9) | 0.0194 (8) | −0.0083 (7) | −0.0011 (7) | −0.0018 (7) |
C5 | 0.0283 (10) | 0.0282 (10) | 0.0266 (9) | −0.0056 (8) | 0.0026 (8) | −0.0080 (8) |
C6 | 0.0196 (9) | 0.0194 (9) | 0.0255 (9) | −0.0052 (7) | 0.0020 (7) | −0.0009 (7) |
C7 | 0.0175 (8) | 0.0243 (9) | 0.0271 (9) | −0.0050 (7) | −0.0030 (7) | −0.0013 (7) |
C8 | 0.0217 (9) | 0.0210 (9) | 0.0197 (8) | −0.0072 (7) | −0.0015 (7) | −0.0026 (7) |
C9 | 0.0176 (8) | 0.0207 (9) | 0.0236 (9) | −0.0044 (7) | −0.0003 (7) | −0.0010 (7) |
C10 | 0.0212 (9) | 0.0222 (9) | 0.0219 (9) | −0.0093 (7) | 0.0003 (7) | −0.0031 (7) |
C11 | 0.0204 (9) | 0.0211 (9) | 0.0259 (9) | −0.0069 (7) | −0.0010 (7) | −0.0018 (7) |
C12 | 0.0261 (9) | 0.0283 (10) | 0.0219 (9) | −0.0109 (8) | −0.0034 (7) | 0.0000 (7) |
C13 | 0.0274 (10) | 0.0310 (10) | 0.0218 (9) | −0.0130 (8) | 0.0028 (7) | −0.0089 (7) |
C14 | 0.0228 (9) | 0.0252 (10) | 0.0303 (10) | −0.0038 (7) | −0.0005 (7) | −0.0076 (8) |
C15 | 0.0249 (9) | 0.0254 (9) | 0.0249 (9) | −0.0061 (8) | −0.0051 (7) | −0.0009 (7) |
C16 | 0.0292 (10) | 0.0277 (10) | 0.0383 (11) | −0.0100 (8) | −0.0077 (8) | 0.0079 (8) |
S—O4 | 1.4903 (14) | C5—H5B | 0.9700 |
S—C1 | 1.7707 (17) | C6—C7 | 1.373 (3) |
S—C16 | 1.7944 (19) | C7—C8 | 1.398 (2) |
F—C13 | 1.363 (2) | C7—H7 | 0.9300 |
O1—C8 | 1.380 (2) | C9—C10 | 1.464 (2) |
O1—C9 | 1.380 (2) | C10—C15 | 1.397 (3) |
O2—C4 | 1.384 (2) | C10—C11 | 1.398 (2) |
O2—C5 | 1.426 (2) | C11—C12 | 1.387 (3) |
O3—C6 | 1.379 (2) | C11—H11 | 0.9300 |
O3—C5 | 1.436 (2) | C12—C13 | 1.375 (3) |
C1—C9 | 1.364 (2) | C12—H12 | 0.9300 |
C1—C2 | 1.443 (2) | C13—C14 | 1.380 (3) |
C2—C8 | 1.395 (2) | C14—C15 | 1.386 (3) |
C2—C3 | 1.411 (2) | C14—H14 | 0.9300 |
C3—C4 | 1.363 (3) | C15—H15 | 0.9300 |
C3—H3 | 0.9300 | C16—H16A | 0.9600 |
C4—C6 | 1.401 (3) | C16—H16B | 0.9600 |
C5—H5A | 0.9700 | C16—H16C | 0.9600 |
O4—S—C1 | 107.29 (8) | O1—C8—C2 | 110.69 (15) |
O4—S—C16 | 105.76 (9) | O1—C8—C7 | 123.97 (15) |
C1—S—C16 | 98.28 (9) | C2—C8—C7 | 125.34 (16) |
C8—O1—C9 | 106.48 (13) | C1—C9—O1 | 110.48 (15) |
C4—O2—C5 | 105.53 (13) | C1—C9—C10 | 133.97 (16) |
C6—O3—C5 | 105.04 (14) | O1—C9—C10 | 115.53 (14) |
C9—C1—C2 | 107.49 (15) | C15—C10—C11 | 119.35 (16) |
C9—C1—S | 126.25 (13) | C15—C10—C9 | 120.68 (16) |
C2—C1—S | 126.00 (13) | C11—C10—C9 | 119.97 (16) |
C8—C2—C3 | 120.39 (16) | C12—C11—C10 | 120.44 (16) |
C8—C2—C1 | 104.84 (15) | C12—C11—H11 | 119.8 |
C3—C2—C1 | 134.76 (16) | C10—C11—H11 | 119.8 |
C4—C3—C2 | 114.39 (16) | C13—C12—C11 | 118.26 (16) |
C4—C3—H3 | 122.8 | C13—C12—H12 | 120.9 |
C2—C3—H3 | 122.8 | C11—C12—H12 | 120.9 |
C3—C4—O2 | 126.99 (16) | F—C13—C12 | 118.70 (16) |
C3—C4—C6 | 124.06 (16) | F—C13—C14 | 118.04 (16) |
O2—C4—C6 | 108.93 (15) | C12—C13—C14 | 123.25 (17) |
O2—C5—O3 | 107.68 (14) | C13—C14—C15 | 117.97 (17) |
O2—C5—H5A | 110.2 | C13—C14—H14 | 121.0 |
O3—C5—H5A | 110.2 | C15—C14—H14 | 121.0 |
O2—C5—H5B | 110.2 | C14—C15—C10 | 120.68 (17) |
O3—C5—H5B | 110.2 | C14—C15—H15 | 119.7 |
H5A—C5—H5B | 108.5 | C10—C15—H15 | 119.7 |
C7—C6—O3 | 127.18 (16) | S—C16—H16A | 109.5 |
C7—C6—C4 | 123.29 (16) | S—C16—H16B | 109.5 |
O3—C6—C4 | 109.50 (15) | H16A—C16—H16B | 109.5 |
C6—C7—C8 | 112.52 (16) | S—C16—H16C | 109.5 |
C6—C7—H7 | 123.7 | H16A—C16—H16C | 109.5 |
C8—C7—H7 | 123.7 | H16B—C16—H16C | 109.5 |
O4—S—C1—C9 | 144.09 (16) | C3—C2—C8—O1 | −179.45 (15) |
C16—S—C1—C9 | −106.47 (17) | C1—C2—C8—O1 | 1.26 (19) |
O4—S—C1—C2 | −29.26 (18) | C3—C2—C8—C7 | 0.1 (3) |
C16—S—C1—C2 | 80.17 (17) | C1—C2—C8—C7 | −179.22 (17) |
C9—C1—C2—C8 | −0.86 (19) | C6—C7—C8—O1 | 179.98 (16) |
S—C1—C2—C8 | 173.53 (13) | C6—C7—C8—C2 | 0.5 (3) |
C9—C1—C2—C3 | −179.99 (19) | C2—C1—C9—O1 | 0.2 (2) |
S—C1—C2—C3 | −5.6 (3) | S—C1—C9—O1 | −174.20 (12) |
C8—C2—C3—C4 | −0.8 (2) | C2—C1—C9—C10 | −178.74 (18) |
C1—C2—C3—C4 | 178.23 (18) | S—C1—C9—C10 | 6.9 (3) |
C2—C3—C4—O2 | 179.41 (16) | C8—O1—C9—C1 | 0.61 (19) |
C2—C3—C4—C6 | 1.0 (3) | C8—O1—C9—C10 | 179.74 (14) |
C5—O2—C4—C3 | 171.11 (18) | C1—C9—C10—C15 | 30.2 (3) |
C5—O2—C4—C6 | −10.26 (19) | O1—C9—C10—C15 | −148.66 (16) |
C4—O2—C5—O3 | 17.49 (19) | C1—C9—C10—C11 | −150.3 (2) |
C6—O3—C5—O2 | −18.03 (19) | O1—C9—C10—C11 | 30.9 (2) |
C5—O3—C6—C7 | −170.31 (18) | C15—C10—C11—C12 | −1.5 (3) |
C5—O3—C6—C4 | 11.72 (19) | C9—C10—C11—C12 | 178.93 (16) |
C3—C4—C6—C7 | −0.4 (3) | C10—C11—C12—C13 | −0.5 (3) |
O2—C4—C6—C7 | −179.07 (16) | C11—C12—C13—F | −178.17 (16) |
C3—C4—C6—O3 | 177.68 (16) | C11—C12—C13—C14 | 1.8 (3) |
O2—C4—C6—O3 | −1.0 (2) | F—C13—C14—C15 | 178.87 (17) |
O3—C6—C7—C8 | −178.09 (16) | C12—C13—C14—C15 | −1.1 (3) |
C4—C6—C7—C8 | −0.4 (3) | C13—C14—C15—C10 | −1.0 (3) |
C9—O1—C8—C2 | −1.19 (19) | C11—C10—C15—C14 | 2.3 (3) |
C9—O1—C8—C7 | 179.28 (16) | C9—C10—C15—C14 | −178.20 (17) |
D—H···A | D—H | H···A | D···A | D—H···A |
C3—H3···O2i | 0.93 | 2.54 | 3.383 (2) | 151 |
C14—H14···O4ii | 0.93 | 2.57 | 3.368 (2) | 144 |
Symmetry codes: (i) −x+1, −y+1, −z+2; (ii) −x+2, −y, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C16H11FO4S |
Mr | 318.31 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 173 |
a, b, c (Å) | 8.0283 (7), 8.4072 (7), 10.6611 (9) |
α, β, γ (°) | 85.735 (1), 86.319 (1), 68.110 (1) |
V (Å3) | 665.33 (10) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.27 |
Crystal size (mm) | 0.40 × 0.40 × 0.20 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2009) |
Tmin, Tmax | 0.899, 0.948 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 4954, 2325, 2153 |
Rint | 0.036 |
(sin θ/λ)max (Å−1) | 0.594 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.033, 0.096, 1.04 |
No. of reflections | 2325 |
No. of parameters | 200 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.76, −0.34 |
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 |
C3—H3···O2i | 0.93 | 2.54 | 3.383 (2) | 151.1 |
C14—H14···O4ii | 0.93 | 2.57 | 3.368 (2) | 144.1 |
Symmetry codes: (i) −x+1, −y+1, −z+2; (ii) −x+2, −y, −z+1. |
References
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Benzofuran ring systems have received considerable attention in view of their pharmacological properties (Howlett et al., 1999; Twyman & Allsop, 1999) and their occurrence as natural products (Akgul & Anil, 2003; von Reuss & König, 2004). As a part of our ongoing studies of the effect of side chain substituents on the solid state structures of 5,6-methylenedioxy-1-benzofuran analogues (Choi et al., 2007,2009), we report the crystal structure of the title compound (Fig.1).
The 5,6-(methylenedioxy)benzofuran unit is essentially planar, with a mean deviation of 0.060 (2) Å from the least-squares plane defined by the twelve constituent atoms. The dihedral angle formed by the plane of the 5,6-(methylenedioxy)benzofuran ring and the plane of 4-fluorophenyl ring is 29.90 (6).
In the crystal packing, both intermolecular C—H···O hydrogen bonds (C3—H3···O2 and C14—H14···O4) link the molecules into dimers (Table 1, Figure 2). Together, the C—H···O hydrogen-bond interactions link the molecules into a one-dimensional chain running in the [1,-1,-1] direction.