Literature DB >> 21579700

5-Fluoro-2-methyl-3-phenyl-sulfonyl-1-benzofuran.

Hong Dae Choi, Pil Ja Seo, Byeng Wha Son, Uk Lee.   

Abstract

There are two symmetry-independent mol-ecules, A and B, in the asymmetric unit of the title compound, C(15)H(11)FO(3)S. The crystal studied was an inversion twin with a 0.21 (12):0.79 (12) domain ratio. In the crystal structure, the two independent mol-ecules are related by a pseudo-inversion center. The dihedral angles formed by the phenyl ring and the plane of the benzofuran fragment are 80.2 (1)° in mol-ecule A and 80.7 (1)° in mol-ecule B. In the crystal structure, the A and B mol-ecules are linked by aromatic π-π inter-actions between the furan and benzene rings of neighbouring benzofuran systems; the centroid-centroid distances are 3.671 (7) and 3.715 (7) Å. In addition, the crystal structure also exhibits two weak non-classical inter-molecular C-H⋯O hydrogen bonds.

Entities:  

Year:  2010        PMID: 21579700      PMCID: PMC2979977          DOI: 10.1107/S1600536809055068

Source DB:  PubMed          Journal:  Acta Crystallogr Sect E Struct Rep Online        ISSN: 1600-5368


Related literature

For the crystal structures of similar 5-halo-2-methyl-3-phenyl­sulfonyl-1-benzofuran derivatives, see: Choi et al. (2008a ▶,b ▶,c ▶). For natural products with benzofuran ring systems, see: Akgul & Anil (2003 ▶); Soekamto et al. (2003 ▶). For the biological activity of benzofuran compounds, see: Aslam et al. (2006 ▶); Galal et al. (2009 ▶).

Experimental

Crystal data

C15H11FO3S M = 290.30 Monoclinic, a = 7.377 (2) Å b = 19.831 (4) Å c = 9.025 (2) Å β = 101.367 (3)° V = 1294.4 (5) Å3 Z = 4 Mo Kα radiation μ = 0.27 mm−1 T = 173 K 0.40 × 0.20 × 0.05 mm

Data collection

Bruker SMART APEXII CCD diffractometer Absorption correction: multi-scan (SADABS; Bruker, 2009 ▶) T min = 0.930, T max = 0.990 6055 measured reflections 3996 independent reflections 3154 reflections with I > 2σ(I) R int = 0.062

Refinement

R[F 2 > 2σ(F 2)] = 0.049 wR(F 2) = 0.115 S = 1.07 3996 reflections 362 parameters 1 restraint H-atom parameters constrained Δρmax = 0.26 e Å−3 Δρmin = −0.35 e Å−3 Absolute structure: Flack (1983 ▶), 1642 Friedel pairs Flack parameter: 0.21 (12) Data collection: APEX2 (Bruker, 2009 ▶); cell refinement: 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. Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536809055068/ng2699sup1.cif Structure factors: contains datablocks I. DOI: 10.1107/S1600536809055068/ng2699Isup2.hkl Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C15H11FO3SF(000) = 600
Mr = 290.30Dx = 1.490 Mg m3
Monoclinic, P21Mo Kα radiation, λ = 0.71073 Å
Hall symbol: p 2ybCell parameters from 2528 reflections
a = 7.377 (2) Åθ = 2.3–25.7°
b = 19.831 (4) ŵ = 0.27 mm1
c = 9.025 (2) ÅT = 173 K
β = 101.367 (3)°Block, colourless
V = 1294.4 (5) Å30.40 × 0.20 × 0.05 mm
Z = 4
Bruker SMART APEXII CCD diffractometer3996 independent reflections
Radiation source: Rotating Anode3154 reflections with I > 2σ(I)
HELIOSRint = 0.062
Detector resolution: 10.0 pixels mm-1θmax = 25.0°, θmin = 2.1°
φ and ω scansh = −8→8
Absorption correction: multi-scan (SADABS; Bruker, 2009)k = −19→23
Tmin = 0.930, Tmax = 0.990l = −10→10
6055 measured reflections
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.049H-atom parameters constrained
wR(F2) = 0.115w = 1/[σ2(Fo2) + (0.0406P)2 + 0.9464P] where P = (Fo2 + 2Fc2)/3
S = 1.07(Δ/σ)max < 0.001
3996 reflectionsΔρmax = 0.26 e Å3
362 parametersΔρmin = −0.35 e Å3
1 restraintAbsolute structure: Flack (1983), 1642 Friedel pairs
Primary atom site location: structure-invariant direct methodsFlack parameter: 0.21 (12)
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.
xyzUiso*/Ueq
S10.40869 (16)0.34079 (7)0.07406 (13)0.0315 (3)
S20.29228 (16)0.56069 (6)0.66799 (14)0.0314 (3)
O10.6428 (5)0.40440 (18)0.4794 (4)0.0356 (9)
O20.2917 (5)0.38775 (19)−0.0206 (4)0.0366 (10)
O30.3351 (5)0.27849 (19)0.1139 (4)0.0419 (10)
O40.0634 (5)0.5048 (2)0.2569 (4)0.0380 (10)
O50.3689 (5)0.62390 (18)0.6366 (4)0.0396 (9)
O60.4061 (5)0.51239 (18)0.7608 (4)0.0370 (9)
F10.5315 (5)0.62712 (18)0.1306 (4)0.0595 (10)
F20.1460 (5)0.27594 (17)0.5845 (4)0.0573 (10)
C10.5062 (6)0.3838 (3)0.2392 (5)0.0292 (12)
C20.5405 (6)0.4548 (3)0.2512 (5)0.0277 (12)
C30.5098 (7)0.5105 (3)0.1556 (6)0.0326 (13)
H30.45600.50630.05370.039*
C40.5630 (8)0.5711 (3)0.2194 (6)0.0409 (14)
C50.6451 (8)0.5809 (3)0.3707 (7)0.0438 (16)
H50.67730.62400.40720.053*
C60.6775 (7)0.5265 (3)0.4641 (7)0.0388 (14)
H60.73240.53110.56560.047*
C70.6260 (7)0.4647 (3)0.4027 (6)0.0323 (13)
C80.5701 (7)0.3559 (3)0.3777 (6)0.0321 (13)
C90.5796 (8)0.2868 (3)0.4372 (6)0.0403 (15)
H9A0.51290.28420.51830.048*
H9B0.70650.27470.47420.048*
H9C0.52570.25630.35820.048*
C100.5988 (7)0.3223 (3)−0.0108 (6)0.0301 (13)
C110.6510 (7)0.3687 (3)−0.1085 (6)0.0390 (14)
H110.58330.4080−0.13420.047*
C120.8080 (7)0.3549 (3)−0.1675 (6)0.0412 (15)
H120.84700.3854−0.23300.049*
C130.9051 (8)0.2966 (4)−0.1293 (7)0.0495 (17)
H131.01080.2881−0.16790.059*
C140.8482 (8)0.2507 (3)−0.0353 (7)0.0452 (15)
H140.91390.2109−0.01190.054*
C150.6935 (7)0.2634 (3)0.0255 (6)0.0394 (14)
H150.65440.23230.08980.047*
C160.1980 (6)0.5209 (3)0.4988 (5)0.0275 (11)
C170.1588 (7)0.4501 (3)0.4804 (6)0.0300 (12)
C180.1820 (7)0.3933 (3)0.5702 (6)0.0341 (14)
H180.23550.39520.67250.041*
C190.1217 (7)0.3339 (3)0.5001 (7)0.0366 (14)
C200.0419 (8)0.3273 (3)0.3496 (7)0.0431 (15)
H200.00510.28520.30940.052*
C210.0171 (7)0.3837 (3)0.2591 (6)0.0409 (14)
H21−0.03570.38120.15680.049*
C220.0738 (7)0.4434 (3)0.3272 (6)0.0320 (13)
C230.1387 (7)0.5516 (3)0.3642 (6)0.0327 (13)
C240.1323 (8)0.6216 (3)0.3081 (7)0.0478 (16)
H24A0.00600.63450.27110.057*
H24B0.19990.62470.22780.057*
H24C0.18670.65110.38900.057*
C250.0987 (7)0.5777 (3)0.7488 (6)0.0293 (13)
C260.0476 (7)0.5332 (3)0.8495 (6)0.0375 (14)
H260.11570.49410.87760.045*
C27−0.1081 (8)0.5478 (3)0.9085 (7)0.0490 (17)
H27−0.14350.51870.97860.059*
C28−0.2091 (8)0.6040 (3)0.8651 (7)0.0461 (17)
H28−0.31290.61310.90570.055*
C29−0.1597 (8)0.6481 (3)0.7610 (7)0.0434 (15)
H29−0.23050.68630.73100.052*
C30−0.0042 (7)0.6347 (3)0.7022 (6)0.0385 (13)
H300.03070.66370.63190.046*
U11U22U33U12U13U23
S10.0254 (7)0.0406 (8)0.0272 (7)−0.0029 (6)0.0021 (5)−0.0014 (6)
S20.0266 (7)0.0380 (8)0.0283 (7)−0.0013 (6)0.0019 (5)−0.0018 (6)
O10.039 (2)0.041 (3)0.025 (2)0.0029 (17)0.0014 (16)0.0001 (18)
O20.029 (2)0.046 (3)0.032 (2)0.0034 (18)−0.0032 (16)−0.0049 (19)
O30.041 (2)0.047 (3)0.037 (2)−0.0117 (18)0.0056 (18)0.0009 (19)
O40.040 (2)0.047 (3)0.027 (2)0.0071 (18)0.0053 (16)0.0018 (19)
O50.035 (2)0.039 (2)0.045 (2)−0.0052 (18)0.0084 (17)−0.0042 (19)
O60.030 (2)0.046 (2)0.033 (2)0.0040 (17)0.0001 (16)0.0034 (19)
F10.083 (3)0.043 (2)0.057 (2)0.0025 (19)0.0235 (19)0.0091 (18)
F20.083 (3)0.043 (2)0.047 (2)−0.0026 (18)0.0171 (19)0.0020 (17)
C10.019 (3)0.041 (4)0.025 (3)−0.002 (2)0.001 (2)−0.001 (2)
C20.020 (3)0.043 (4)0.020 (3)−0.001 (2)0.005 (2)−0.004 (2)
C30.032 (3)0.041 (4)0.025 (3)0.002 (2)0.006 (2)−0.001 (3)
C40.046 (3)0.037 (4)0.042 (3)0.004 (3)0.016 (3)0.005 (3)
C50.041 (3)0.046 (4)0.047 (4)−0.006 (3)0.015 (3)−0.012 (3)
C60.033 (3)0.053 (4)0.030 (3)−0.004 (3)0.006 (2)−0.014 (3)
C70.026 (3)0.046 (4)0.025 (3)0.002 (2)0.005 (2)−0.002 (3)
C80.026 (3)0.038 (4)0.032 (3)0.004 (2)0.006 (2)−0.001 (3)
C90.043 (4)0.047 (4)0.028 (3)−0.003 (3)0.001 (3)0.006 (3)
C100.030 (3)0.043 (4)0.016 (2)−0.002 (2)0.000 (2)−0.004 (2)
C110.035 (3)0.053 (4)0.027 (3)−0.004 (3)−0.001 (2)−0.002 (3)
C120.036 (3)0.071 (5)0.015 (3)−0.009 (3)0.002 (2)−0.001 (3)
C130.038 (4)0.074 (5)0.037 (4)0.004 (3)0.011 (3)−0.010 (3)
C140.042 (3)0.054 (4)0.036 (3)0.012 (3)−0.001 (3)−0.010 (3)
C150.036 (3)0.044 (4)0.038 (3)0.002 (3)0.006 (3)−0.011 (3)
C160.025 (3)0.034 (3)0.024 (3)0.003 (2)0.004 (2)0.003 (2)
C170.019 (3)0.040 (4)0.031 (3)0.003 (2)0.004 (2)0.001 (2)
C180.033 (3)0.041 (4)0.030 (3)−0.001 (2)0.008 (2)0.000 (3)
C190.033 (3)0.035 (4)0.042 (3)0.000 (3)0.010 (3)0.005 (3)
C200.038 (3)0.050 (4)0.040 (3)−0.009 (3)0.006 (3)−0.012 (3)
C210.039 (3)0.057 (4)0.026 (3)0.000 (3)0.005 (2)−0.011 (3)
C220.027 (3)0.045 (4)0.024 (3)0.002 (2)0.005 (2)−0.001 (3)
C230.030 (3)0.039 (4)0.031 (3)0.001 (2)0.012 (2)0.000 (3)
C240.054 (4)0.051 (4)0.040 (4)0.015 (3)0.013 (3)0.007 (3)
C250.023 (3)0.039 (4)0.024 (3)−0.002 (2)0.001 (2)−0.007 (3)
C260.027 (3)0.054 (4)0.029 (3)−0.003 (2)−0.001 (2)0.003 (3)
C270.036 (3)0.081 (5)0.031 (3)−0.004 (3)0.008 (3)0.004 (3)
C280.031 (3)0.077 (5)0.029 (3)−0.004 (3)0.002 (3)−0.023 (3)
C290.035 (3)0.043 (4)0.050 (4)0.009 (3)0.003 (3)−0.011 (3)
C300.043 (3)0.034 (3)0.041 (3)0.000 (3)0.013 (3)−0.001 (3)
S1—O31.424 (4)C12—C131.368 (8)
S1—O21.432 (4)C12—H120.9300
S1—C11.744 (5)C13—C141.365 (8)
S1—C101.764 (6)C13—H130.9300
S2—O51.426 (4)C14—C151.383 (8)
S2—O61.430 (4)C14—H140.9300
S2—C161.738 (5)C15—H150.9300
S2—C251.759 (5)C16—C231.352 (7)
O1—C81.364 (6)C16—C171.437 (7)
O1—C71.375 (6)C17—C181.378 (7)
O4—C221.369 (6)C17—C221.408 (7)
O4—C231.377 (6)C18—C191.369 (8)
F1—C41.363 (6)C18—H180.9300
F2—C191.371 (7)C19—C201.377 (8)
C1—C81.364 (7)C20—C211.375 (8)
C1—C21.431 (7)C20—H200.9300
C2—C31.392 (7)C21—C221.361 (8)
C2—C71.402 (7)C21—H210.9300
C3—C41.357 (8)C23—C241.474 (7)
C3—H30.9300C24—H24A0.9600
C4—C51.393 (8)C24—H24B0.9600
C5—C61.361 (8)C24—H24C0.9600
C5—H50.9300C25—C261.372 (7)
C6—C71.368 (8)C25—C301.381 (7)
C6—H60.9300C26—C271.389 (8)
C8—C91.469 (8)C26—H260.9300
C9—H9A0.9600C27—C281.356 (8)
C9—H9B0.9600C27—H270.9300
C9—H9C0.9600C28—C291.383 (8)
C10—C151.368 (7)C28—H280.9300
C10—C111.380 (8)C29—C301.381 (8)
C11—C121.394 (8)C29—H290.9300
C11—H110.9300C30—H300.9300
O3—S1—O2120.0 (2)C12—C13—H13119.7
O3—S1—C1108.8 (2)C13—C14—C15120.3 (6)
O2—S1—C1106.9 (2)C13—C14—H14119.8
O3—S1—C10107.7 (2)C15—C14—H14119.8
O2—S1—C10108.3 (2)C10—C15—C14118.8 (6)
C1—S1—C10104.1 (2)C10—C15—H15120.6
O5—S2—O6119.7 (2)C14—C15—H15120.6
O5—S2—C16109.3 (2)C23—C16—C17108.3 (4)
O6—S2—C16107.3 (2)C23—C16—S2126.0 (4)
O5—S2—C25107.5 (2)C17—C16—S2125.6 (4)
O6—S2—C25108.4 (2)C18—C17—C22118.7 (5)
C16—S2—C25103.5 (2)C18—C17—C16137.1 (5)
C8—O1—C7106.9 (4)C22—C17—C16104.3 (4)
C22—O4—C23107.2 (4)C19—C18—C17116.1 (5)
C8—C1—C2107.8 (4)C19—C18—H18122.0
C8—C1—S1126.5 (4)C17—C18—H18122.0
C2—C1—S1125.7 (4)C18—C19—F2118.0 (5)
C3—C2—C7118.7 (5)C18—C19—C20125.1 (6)
C3—C2—C1136.7 (5)F2—C19—C20116.9 (5)
C7—C2—C1104.5 (4)C21—C20—C19119.3 (6)
C4—C3—C2116.2 (5)C21—C20—H20120.3
C4—C3—H3121.9C19—C20—H20120.3
C2—C3—H3121.9C22—C21—C20116.4 (5)
C3—C4—F1118.1 (5)C22—C21—H21121.8
C3—C4—C5125.0 (6)C20—C21—H21121.8
F1—C4—C5116.9 (6)C21—C22—O4125.5 (5)
C6—C5—C4119.1 (6)C21—C22—C17124.4 (5)
C6—C5—H5120.5O4—C22—C17110.1 (5)
C4—C5—H5120.5C16—C23—O4110.0 (4)
C5—C6—C7117.2 (5)C16—C23—C24135.6 (5)
C5—C6—H6121.4O4—C23—C24114.3 (5)
C7—C6—H6121.4C23—C24—H24A109.5
C6—C7—O1125.8 (5)C23—C24—H24B109.5
C6—C7—C2123.8 (5)H24A—C24—H24B109.5
O1—C7—C2110.4 (5)C23—C24—H24C109.5
C1—C8—O1110.5 (5)H24A—C24—H24C109.5
C1—C8—C9134.2 (5)H24B—C24—H24C109.5
O1—C8—C9115.3 (4)C26—C25—C30121.5 (5)
C8—C9—H9A109.5C26—C25—S2120.2 (4)
C8—C9—H9B109.5C30—C25—S2118.2 (4)
H9A—C9—H9B109.5C25—C26—C27118.4 (5)
C8—C9—H9C109.5C25—C26—H26120.8
H9A—C9—H9C109.5C27—C26—H26120.8
H9B—C9—H9C109.5C28—C27—C26120.6 (6)
C15—C10—C11121.9 (5)C28—C27—H27119.7
C15—C10—S1119.1 (4)C26—C27—H27119.7
C11—C10—S1119.0 (4)C27—C28—C29120.9 (6)
C10—C11—C12118.1 (6)C27—C28—H28119.6
C10—C11—H11120.9C29—C28—H28119.6
C12—C11—H11120.9C30—C29—C28119.3 (6)
C13—C12—C11120.1 (6)C30—C29—H29120.4
C13—C12—H12119.9C28—C29—H29120.4
C11—C12—H12119.9C25—C30—C29119.3 (5)
C14—C13—C12120.7 (6)C25—C30—H30120.4
C14—C13—H13119.7C29—C30—H30120.4
O3—S1—C1—C824.1 (5)O5—S2—C16—C23−24.0 (5)
O2—S1—C1—C8155.0 (4)O6—S2—C16—C23−155.2 (4)
C10—S1—C1—C8−90.6 (5)C25—S2—C16—C2390.3 (5)
O3—S1—C1—C2−158.9 (4)O5—S2—C16—C17160.2 (4)
O2—S1—C1—C2−28.0 (5)O6—S2—C16—C1729.1 (5)
C10—S1—C1—C286.5 (5)C25—S2—C16—C17−85.5 (4)
C8—C1—C2—C3−179.6 (6)C23—C16—C17—C18−179.4 (6)
S1—C1—C2—C32.8 (8)S2—C16—C17—C18−3.0 (8)
C8—C1—C2—C7−0.1 (5)C23—C16—C17—C22−0.1 (5)
S1—C1—C2—C7−177.6 (4)S2—C16—C17—C22176.3 (4)
C7—C2—C3—C4−1.4 (7)C22—C17—C18—C191.1 (7)
C1—C2—C3—C4178.1 (5)C16—C17—C18—C19−179.7 (5)
C2—C3—C4—F1−178.5 (4)C17—C18—C19—F2178.5 (4)
C2—C3—C4—C50.3 (8)C17—C18—C19—C200.2 (8)
C3—C4—C5—C60.5 (9)C18—C19—C20—C21−0.5 (9)
F1—C4—C5—C6179.3 (5)F2—C19—C20—C21−178.9 (5)
C4—C5—C6—C7−0.2 (8)C19—C20—C21—C22−0.4 (8)
C5—C6—C7—O1−178.2 (5)C20—C21—C22—O4179.2 (5)
C5—C6—C7—C2−0.9 (8)C20—C21—C22—C171.7 (8)
C8—O1—C7—C6178.1 (5)C23—O4—C22—C21−178.6 (5)
C8—O1—C7—C20.5 (5)C23—O4—C22—C17−0.9 (5)
C3—C2—C7—C61.8 (7)C18—C17—C22—C21−2.1 (8)
C1—C2—C7—C6−177.9 (5)C16—C17—C22—C21178.4 (5)
C3—C2—C7—O1179.4 (4)C18—C17—C22—O4−179.9 (4)
C1—C2—C7—O1−0.3 (5)C16—C17—C22—O40.6 (5)
C2—C1—C8—O10.4 (5)C17—C16—C23—O4−0.5 (5)
S1—C1—C8—O1177.9 (3)S2—C16—C23—O4−176.8 (3)
C2—C1—C8—C9−178.3 (5)C17—C16—C23—C24177.9 (5)
S1—C1—C8—C9−0.8 (8)S2—C16—C23—C241.5 (9)
C7—O1—C8—C1−0.6 (5)C22—O4—C23—C160.9 (5)
C7—O1—C8—C9178.4 (4)C22—O4—C23—C24−177.9 (4)
O3—S1—C10—C15−26.1 (5)O5—S2—C25—C26−150.5 (4)
O2—S1—C10—C15−157.2 (4)O6—S2—C25—C26−19.8 (5)
C1—S1—C10—C1589.3 (5)C16—S2—C25—C2693.9 (4)
O3—S1—C10—C11155.8 (4)O5—S2—C25—C3032.8 (5)
O2—S1—C10—C1124.6 (5)O6—S2—C25—C30163.5 (4)
C1—S1—C10—C11−88.8 (4)C16—S2—C25—C30−82.8 (5)
C15—C10—C11—C12−1.8 (8)C30—C25—C26—C27−2.2 (8)
S1—C10—C11—C12176.3 (4)S2—C25—C26—C27−178.8 (4)
C10—C11—C12—C130.5 (8)C25—C26—C27—C281.3 (8)
C11—C12—C13—C141.0 (9)C26—C27—C28—C290.1 (9)
C12—C13—C14—C15−1.4 (9)C27—C28—C29—C30−0.7 (9)
C11—C10—C15—C141.4 (8)C26—C25—C30—C291.6 (8)
S1—C10—C15—C14−176.7 (4)S2—C25—C30—C29178.3 (4)
C13—C14—C15—C100.2 (8)C28—C29—C30—C25−0.1 (9)
D—H···AD—HH···AD···AD—H···A
C3—H3···O6i0.932.603.494 (6)162
C26—H26···O2ii0.932.553.479 (7)174
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯AD—HH⋯ADAD—H⋯A
C3—H3⋯O6i0.932.603.494 (6)162
C26—H26⋯O2ii0.932.553.479 (7)174

Symmetry codes: (i) ; (ii) .

  7 in total

1.  Benzofurans and another constituent from seeds of Styrax officinalis.

Authors:  Yurdanur Yayla Akgul; Huseyin Anil
Journal:  Phytochemistry       Date:  2003-08       Impact factor: 4.072

2.  A short history of SHELX.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr A       Date:  2007-12-21       Impact factor: 2.290

3.  Artoindonesianins X and Y, two isoprenylated 2-arylbenzofurans, from Artocarpus fretessi (Moraceae).

Authors:  Nunuk H Soekamto; Sjamsul A Achmad; Emilio L Ghisalberti; Euis H Hakim; Yana M Syah
Journal:  Phytochemistry       Date:  2003-10       Impact factor: 4.072

4.  5-Iodo-2,7-dimethyl-3-phenyl-sulfonyl-1-benzofuran.

Authors:  Hong Dae Choi; Pil Ja Seo; Byeng Wha Son; Uk Lee
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2008-04-30

5.  5-Bromo-2-methyl-3-phenyl-sulfonyl-1-benzofuran.

Authors:  Hong Dae Choi; Pil Ja Seo; Byeng Wha Son; Uk Lee
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2008-04-02

6.  Synthesis of potent antitumor and antiviral benzofuran derivatives.

Authors:  Shadia A Galal; Amira S Abd El-All; Mohamed M Abdallah; Hoda I El-Diwani
Journal:  Bioorg Med Chem Lett       Date:  2009-03-21       Impact factor: 2.823

7.  5-Chloro-2-methyl-3-phenyl-sulfonyl-1-benzofuran.

Authors:  Hong Dae Choi; Pil Ja Seo; Byeng Wha Son; Uk Lee
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2008-06-07
  7 in total
  4 in total

1.  3-Cyclo-hexyl-sulfonyl-5-fluoro-2-methyl-1-benzofuran.

Authors:  Hong Dae Choi; Pil Ja Seo; Byeng Wha Son; Uk Lee
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-03-12

2.  3-(4-Bromo-phenyl-sulfin-yl)-5-fluoro-2-methyl-1-benzofuran.

Authors:  Hong Dae Choi; Pil Ja Seo; Uk Lee
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2012-02-17

3.  5-Fluoro-2-methyl-3-(4-methyl-phenyl-sulfon-yl)-1-benzofuran.

Authors:  Hong Dae Choi; Pil Ja Seo; Uk Lee
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2012-01-18

4.  5-Fluoro-2-methyl-3-(3-methyl-phenyl-sulfon-yl)-1-benzo-furan.

Authors:  Hong Dae Choi; Pil Ja Seo; Uk Lee
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2014-03-26
  4 in total

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