organic compounds\(\def\hfill{\hskip 5em}\def\hfil{\hskip 3em}\def\eqno#1{\hfil {#1}}\)

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ISSN: 2056-9890

3-(4-Bromo­phenyl­sulfin­yl)-2,5,7-tri­methyl-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

(Received 10 January 2012; accepted 13 January 2012; online 21 January 2012)

In the title compound, C17H15BrO2S, the 4-bromo­phenyl ring makes a dihedral angle of 87.78 (5)° with the mean plane of the benzofuran fragment. In the crystal, mol­ecules are linked by weak C—H⋯O hydrogen bonds, and by weak inter­molecular C—S⋯π [3.399 (2) Å] and C—Br⋯π [3.797 (2) and 3.757 (2) Å] inter­actions.

Related literature

For background information and the crystal structures of related compounds, see: Choi et al. (2010a[Choi, H. D., Seo, P. J., Son, B. W. & Lee, U. (2010a). Acta Cryst. E66, o472.],b[Choi, H. D., Seo, P. J., Son, B. W. & Lee, U. (2010b). Acta Cryst. E66, o2325.]).

[Scheme 1]

Experimental

Crystal data
  • C17H15BrO2S

  • Mr = 363.26

  • Triclinic, [P \overline 1]

  • a = 6.1034 (1) Å

  • b = 10.2278 (2) Å

  • c = 12.6731 (2) Å

  • α = 84.586 (1)°

  • β = 79.419 (1)°

  • γ = 85.730 (1)°

  • V = 772.87 (2) Å3

  • Z = 2

  • Mo Kα radiation

  • μ = 2.80 mm−1

  • T = 173 K

  • 0.37 × 0.34 × 0.25 mm

Data collection
  • Bruker SMART APEXII CCD diffractometer

  • Absorption correction: multi-scan (SADABS; Bruker, 2009[Bruker (2009). APEX2. SADABS and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.]) Tmin = 0.474, Tmax = 0.746

  • 14146 measured reflections

  • 3826 independent reflections

  • 3319 reflections with I > 2σ(I)

  • Rint = 0.036

Refinement
  • R[F2 > 2σ(F2)] = 0.032

  • wR(F2) = 0.086

  • S = 1.06

  • 3826 reflections

  • 193 parameters

  • H-atom parameters constrained

  • Δρmax = 0.46 e Å−3

  • Δρmin = −0.83 e Å−3

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A D—H H⋯A DA D—H⋯A
C13—H13⋯O2i 0.95 2.50 3.233 (2) 134
Symmetry code: (i) -x+2, -y+1, -z+1.

Data collection: APEX2 (Bruker, 2009[Bruker (2009). APEX2. SADABS and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.]); cell refinement: SAINT (Bruker, 2009[Bruker (2009). APEX2. SADABS and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.]); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); molecular graphics: ORTEP-3 (Farrugia, 1997[Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565.]) and DIAMOND (Brandenburg, 1998[Brandenburg, K. (1998). DIAMOND. Crystal Impact GbR, Bonn, Germany.]); software used to prepare material for publication: SHELXL97.

Supporting information


Comment top

As a part of our continuing study of 2,5,7-trimethyl-1-benzofuran derivatives containing 3-(4-fluorophenylsulfinyl) (Choi et al., 2010a) and 3-(4-chlorophenylsufinyl) (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 0.007 (1) Å from the least-squares plane defined by the nine constituent atoms. The dihedral angle between the 4-bromophenyl ring and the mean plane of the benzofurn fragment is 87.78 (5)°. The crystal packing (Fig. 2) is stabilized by weak intermolecular C13—H13···O2 hydrogen bonds (Table 1). The crystal packing is further stabilized by intermolecular C15—Br1···π interactions between the bromine atom and the benzene rings of a neighbouring molecule with Br1···Cg1iii and Br1···Cg2iii being 3.757 (2) and 3.797 (2) Å, respectively. (Cg1 and Cg2 are the centroid of the C12–C17 and C2–C7 benzene rings, respectively.) In addition, there is a weak intermolecular S···π interaction between the sulfur and the centroid of the benzene ring (C12–C17) of an adjacent molecule, with S1···Cg1ii 3.399 (2) Å.

Related literature top

For background information and the crystal structures of related compounds, see: Choi et al. (2010a,b).

Experimental top

77% 3-Chloroperoxybenzoic acid (224 mg, 0.9 mmol) was added in small portions to a stirred solution of 3-(4-bromophenylsulfanyl)-2,5,7-trimethyl-1-benzofuran (312 mg, 0.9 mmol) in dichloromethane (40 mL) at 273 K. After being stirred at room temperature for 4 h, 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 column chromatography (hexane–ethyl acetate, 2:1 v/v) to afford the title compound as a colorless solid [yield 71%, m.p. 431–432 K; Rf = 0.53 (hexane-ethyl acetate, 2:1 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.

Refinement top

All H atoms were positioned geometrically and refined using a riding model, with C—H = 0.95 and 0.98 Å for aryl and methyl H atoms, respectively, and Uiso(H) = 1.2Ueq(C) for aryl and 1.5Ueq(C) for methyl H atoms.

Computing details top

Data collection: APEX2 (Bruker, 2009); cell refinement: 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).

Figures top
[Figure 1] Fig. 1. The molecular structure of the title compound with the atom numbering scheme. Displacement ellipsoids are drawn at the 50% probability level. H atoms are presented as small spheres of arbitrary radii.
[Figure 2] Fig. 2. A view of the C—H···O, C—S···π and C—Br···π interactions (dotted lines) in the crystal structure of the title compound. H atoms non-participating in hydrogen-bonding were omitted for clarity. [Symmetry codes: (i) - x + 2, - y + 1, - z + 1; (ii) - x + 1, - y + 1, - z + 1; (iii) - x + 1, - y + 2, - z + 1.]
3-(4-Bromophenylsulfinyl)-2,5,7-trimethyl-1-benzofuran top
Crystal data top
C17H15BrO2SZ = 2
Mr = 363.26F(000) = 368
Triclinic, P1Dx = 1.561 Mg m3
Hall symbol: -P 1Mo Kα radiation, λ = 0.71073 Å
a = 6.1034 (1) ÅCell parameters from 8427 reflections
b = 10.2278 (2) Åθ = 2.5–28.2°
c = 12.6731 (2) ŵ = 2.80 mm1
α = 84.586 (1)°T = 173 K
β = 79.419 (1)°Block, colourless
γ = 85.730 (1)°0.37 × 0.34 × 0.25 mm
V = 772.87 (2) Å3
Data collection top
Bruker SMART APEXII CCD
diffractometer
3826 independent reflections
Radiation source: rotating anode3319 reflections with I > 2σ(I)
Graphite multilayer monochromatorRint = 0.036
Detector resolution: 10.0 pixels mm-1θmax = 28.3°, θmin = 1.6°
ϕ and ω scansh = 88
Absorption correction: multi-scan
(SADABS; Bruker, 2009)
k = 1313
Tmin = 0.474, Tmax = 0.746l = 1616
14146 measured reflections
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.032Hydrogen site location: difference Fourier map
wR(F2) = 0.086H-atom parameters constrained
S = 1.06 w = 1/[σ2(Fo2) + (0.0446P)2 + 0.243P]
where P = (Fo2 + 2Fc2)/3
3826 reflections(Δ/σ)max = 0.001
193 parametersΔρmax = 0.46 e Å3
0 restraintsΔρmin = 0.83 e Å3
Crystal data top
C17H15BrO2Sγ = 85.730 (1)°
Mr = 363.26V = 772.87 (2) Å3
Triclinic, P1Z = 2
a = 6.1034 (1) ÅMo Kα radiation
b = 10.2278 (2) ŵ = 2.80 mm1
c = 12.6731 (2) ÅT = 173 K
α = 84.586 (1)°0.37 × 0.34 × 0.25 mm
β = 79.419 (1)°
Data collection top
Bruker SMART APEXII CCD
diffractometer
3826 independent reflections
Absorption correction: multi-scan
(SADABS; Bruker, 2009)
3319 reflections with I > 2σ(I)
Tmin = 0.474, Tmax = 0.746Rint = 0.036
14146 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0320 restraints
wR(F2) = 0.086H-atom parameters constrained
S = 1.06Δρmax = 0.46 e Å3
3826 reflectionsΔρmin = 0.83 e Å3
193 parameters
Special details top

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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
Br10.40055 (4)0.990460 (19)0.338480 (16)0.04068 (9)
S10.60888 (8)0.48980 (4)0.65970 (3)0.02498 (11)
O10.2929 (2)0.59852 (12)0.94015 (10)0.0265 (3)
O20.8568 (2)0.47089 (14)0.64796 (11)0.0343 (3)
C10.5094 (3)0.56250 (17)0.78141 (14)0.0237 (4)
C20.6083 (3)0.66325 (16)0.82636 (14)0.0237 (4)
C30.7953 (3)0.73737 (17)0.79577 (15)0.0272 (4)
H30.89270.72690.72910.033*
C40.8367 (3)0.82671 (18)0.86439 (16)0.0306 (4)
C50.6874 (4)0.84262 (18)0.96147 (16)0.0329 (4)
H50.71670.90581.00670.039*
C60.4990 (3)0.77049 (18)0.99471 (14)0.0297 (4)
C70.4683 (3)0.68124 (17)0.92437 (14)0.0250 (4)
C80.3247 (3)0.52683 (17)0.85186 (14)0.0249 (4)
C91.0408 (4)0.9067 (2)0.8340 (2)0.0417 (5)
H9A1.15610.85920.78510.063*
H9B1.09820.92090.89900.063*
H9C1.00060.99180.79800.063*
C100.3388 (4)0.7868 (2)1.09857 (16)0.0422 (6)
H10A0.18920.81231.08310.063*
H10B0.38790.85531.13660.063*
H10C0.33480.70351.14370.063*
C110.1536 (3)0.43163 (19)0.85082 (16)0.0318 (4)
H11A0.01410.47950.83860.048*
H11B0.12750.37890.92020.048*
H11C0.20610.37360.79300.048*
C130.7261 (3)0.68142 (19)0.49533 (15)0.0277 (4)
H130.87400.64360.49180.033*
C120.5531 (3)0.63048 (17)0.57012 (14)0.0232 (4)
C140.6811 (4)0.78872 (19)0.42530 (15)0.0311 (4)
H140.79810.82550.37360.037*
C150.4645 (4)0.84151 (18)0.43155 (15)0.0283 (4)
C160.2898 (3)0.78812 (19)0.50419 (16)0.0309 (4)
H160.14150.82470.50640.037*
C170.3341 (3)0.68074 (19)0.57347 (16)0.0303 (4)
H170.21600.64160.62290.036*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
Br10.05809 (17)0.03134 (12)0.03613 (13)0.00576 (10)0.01923 (11)0.00288 (8)
S10.0259 (2)0.0250 (2)0.0236 (2)0.00246 (17)0.00289 (18)0.00540 (16)
O10.0265 (7)0.0282 (6)0.0229 (6)0.0006 (5)0.0002 (5)0.0031 (5)
O20.0269 (7)0.0430 (8)0.0315 (7)0.0107 (6)0.0044 (6)0.0077 (6)
C10.0244 (9)0.0237 (8)0.0222 (8)0.0019 (7)0.0029 (7)0.0025 (6)
C20.0236 (9)0.0224 (8)0.0247 (8)0.0032 (7)0.0050 (7)0.0012 (6)
C30.0227 (9)0.0264 (8)0.0314 (9)0.0018 (7)0.0033 (7)0.0015 (7)
C40.0292 (10)0.0237 (8)0.0410 (11)0.0006 (7)0.0136 (8)0.0012 (7)
C50.0439 (12)0.0239 (8)0.0347 (10)0.0021 (8)0.0171 (9)0.0054 (7)
C60.0394 (12)0.0252 (8)0.0252 (9)0.0047 (8)0.0093 (8)0.0037 (7)
C70.0273 (10)0.0225 (8)0.0245 (8)0.0015 (7)0.0046 (7)0.0012 (6)
C80.0253 (9)0.0248 (8)0.0237 (8)0.0016 (7)0.0037 (7)0.0010 (6)
C90.0341 (12)0.0329 (10)0.0608 (14)0.0058 (9)0.0138 (10)0.0044 (9)
C100.0604 (16)0.0365 (11)0.0277 (10)0.0027 (10)0.0013 (10)0.0096 (8)
C110.0286 (10)0.0324 (9)0.0344 (10)0.0059 (8)0.0049 (8)0.0003 (8)
C130.0216 (9)0.0333 (9)0.0281 (9)0.0024 (7)0.0022 (7)0.0067 (7)
C120.0232 (9)0.0261 (8)0.0211 (8)0.0014 (7)0.0039 (7)0.0057 (6)
C140.0318 (11)0.0343 (10)0.0271 (9)0.0096 (8)0.0021 (8)0.0014 (7)
C150.0367 (11)0.0255 (8)0.0257 (9)0.0038 (8)0.0118 (8)0.0033 (7)
C160.0251 (10)0.0344 (10)0.0342 (10)0.0017 (8)0.0091 (8)0.0028 (8)
C170.0229 (10)0.0354 (10)0.0300 (9)0.0012 (8)0.0005 (8)0.0006 (8)
Geometric parameters (Å, º) top
Br1—C151.8988 (19)C9—H9A0.9800
S1—O21.4929 (15)C9—H9B0.9800
S1—C11.7623 (17)C9—H9C0.9800
S1—C121.7989 (18)C10—H10A0.9800
O1—C81.372 (2)C10—H10B0.9800
O1—C71.388 (2)C10—H10C0.9800
C1—C81.353 (3)C11—H11A0.9800
C1—C21.442 (3)C11—H11B0.9800
C2—C71.392 (2)C11—H11C0.9800
C2—C31.392 (3)C13—C121.381 (3)
C3—C41.386 (3)C13—C141.389 (3)
C3—H30.9500C13—H130.9500
C4—C51.405 (3)C12—C171.390 (3)
C4—C91.512 (3)C14—C151.382 (3)
C5—C61.391 (3)C14—H140.9500
C5—H50.9500C15—C161.383 (3)
C6—C71.380 (3)C16—C171.382 (3)
C6—C101.504 (3)C16—H160.9500
C8—C111.482 (3)C17—H170.9500
O2—S1—C1107.54 (9)H9A—C9—H9C109.5
O2—S1—C12106.52 (9)H9B—C9—H9C109.5
C1—S1—C1297.22 (8)C6—C10—H10A109.5
C8—O1—C7106.40 (13)C6—C10—H10B109.5
C8—C1—C2107.98 (15)H10A—C10—H10B109.5
C8—C1—S1124.04 (14)C6—C10—H10C109.5
C2—C1—S1127.94 (14)H10A—C10—H10C109.5
C7—C2—C3119.24 (17)H10B—C10—H10C109.5
C7—C2—C1104.52 (16)C8—C11—H11A109.5
C3—C2—C1136.24 (16)C8—C11—H11B109.5
C4—C3—C2118.80 (17)H11A—C11—H11B109.5
C4—C3—H3120.6C8—C11—H11C109.5
C2—C3—H3120.6H11A—C11—H11C109.5
C3—C4—C5119.54 (18)H11B—C11—H11C109.5
C3—C4—C9119.84 (19)C12—C13—C14119.09 (18)
C5—C4—C9120.62 (19)C12—C13—H13120.5
C6—C5—C4123.30 (18)C14—C13—H13120.5
C6—C5—H5118.3C13—C12—C17121.34 (17)
C4—C5—H5118.3C13—C12—S1119.43 (14)
C7—C6—C5114.68 (17)C17—C12—S1119.12 (14)
C7—C6—C10121.73 (19)C15—C14—C13119.36 (18)
C5—C6—C10123.59 (18)C15—C14—H14120.3
C6—C7—O1125.11 (16)C13—C14—H14120.3
C6—C7—C2124.42 (18)C14—C15—C16121.62 (18)
O1—C7—C2110.46 (16)C14—C15—Br1119.99 (15)
C1—C8—O1110.62 (16)C16—C15—Br1118.39 (15)
C1—C8—C11133.50 (17)C17—C16—C15119.08 (18)
O1—C8—C11115.86 (15)C17—C16—H16120.5
C4—C9—H9A109.5C15—C16—H16120.5
C4—C9—H9B109.5C16—C17—C12119.41 (18)
H9A—C9—H9B109.5C16—C17—H17120.3
C4—C9—H9C109.5C12—C17—H17120.3
O2—S1—C1—C8137.92 (16)C1—C2—C7—C6179.37 (17)
C12—S1—C1—C8112.17 (17)C3—C2—C7—O1179.85 (15)
O2—S1—C1—C239.33 (18)C1—C2—C7—O10.31 (19)
C12—S1—C1—C270.58 (17)C2—C1—C8—O10.7 (2)
C8—C1—C2—C70.3 (2)S1—C1—C8—O1178.45 (12)
S1—C1—C2—C7177.85 (14)C2—C1—C8—C11178.9 (2)
C8—C1—C2—C3179.2 (2)S1—C1—C8—C113.4 (3)
S1—C1—C2—C31.6 (3)C7—O1—C8—C10.92 (19)
C7—C2—C3—C40.3 (3)C7—O1—C8—C11179.41 (15)
C1—C2—C3—C4179.09 (19)C14—C13—C12—C172.9 (3)
C2—C3—C4—C51.5 (3)C14—C13—C12—S1178.98 (14)
C2—C3—C4—C9178.93 (18)O2—S1—C12—C1311.31 (17)
C3—C4—C5—C61.5 (3)C1—S1—C12—C13122.07 (15)
C9—C4—C5—C6178.92 (19)O2—S1—C12—C17172.47 (15)
C4—C5—C6—C70.2 (3)C1—S1—C12—C1761.72 (17)
C4—C5—C6—C10179.87 (19)C12—C13—C14—C150.4 (3)
C5—C6—C7—O1179.99 (16)C13—C14—C15—C161.6 (3)
C10—C6—C7—O10.1 (3)C13—C14—C15—Br1178.71 (14)
C5—C6—C7—C21.1 (3)C14—C15—C16—C171.2 (3)
C10—C6—C7—C2178.82 (18)Br1—C15—C16—C17179.15 (15)
C8—O1—C7—C6179.80 (17)C15—C16—C17—C121.3 (3)
C8—O1—C7—C20.75 (19)C13—C12—C17—C163.3 (3)
C3—C2—C7—C61.1 (3)S1—C12—C17—C16179.44 (15)
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
C13—H13···O2i0.952.503.233 (2)134
Symmetry code: (i) x+2, y+1, z+1.

Experimental details

Crystal data
Chemical formulaC17H15BrO2S
Mr363.26
Crystal system, space groupTriclinic, P1
Temperature (K)173
a, b, c (Å)6.1034 (1), 10.2278 (2), 12.6731 (2)
α, β, γ (°)84.586 (1), 79.419 (1), 85.730 (1)
V3)772.87 (2)
Z2
Radiation typeMo Kα
µ (mm1)2.80
Crystal size (mm)0.37 × 0.34 × 0.25
Data collection
DiffractometerBruker SMART APEXII CCD
diffractometer
Absorption correctionMulti-scan
(SADABS; Bruker, 2009)
Tmin, Tmax0.474, 0.746
No. of measured, independent and
observed [I > 2σ(I)] reflections
14146, 3826, 3319
Rint0.036
(sin θ/λ)max1)0.667
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.032, 0.086, 1.06
No. of reflections3826
No. of parameters193
H-atom treatmentH-atom parameters constrained
Δρmax, Δρmin (e Å3)0.46, 0.83

Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 1998).

Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
C13—H13···O2i0.952.503.233 (2)134.1
Symmetry code: (i) x+2, y+1, z+1.
 

Acknowledgements

This work was supported by the Blue-Bio Industry Regional Innovation Center (RIC08-06-07) at Dongeui University as an RIC program under the Ministry of Knowledge Economy and Busan City.

References

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First citationChoi, H. D., Seo, P. J., Son, B. W. & Lee, U. (2010a). Acta Cryst. E66, o472.  Web of Science CSD CrossRef IUCr Journals Google Scholar
First citationChoi, H. D., Seo, P. J., Son, B. W. & Lee, U. (2010b). Acta Cryst. E66, o2325.  Web of Science CSD CrossRef IUCr Journals Google Scholar
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