In the title compound, C(16)H(12)BrFO(2)S, the O atom and the methyl group of the methyl-sulfinyl substituent are located on opposite sides of the plane through the benzofuran fragment. The 4-fluoro-phenyl ring is rotated out of the benzofuran plane, as indicated by the dihedral angle of 16.17 (5)°. The crystal structure exhibits an inter-molecular C-H⋯O hydrogen bond and a Br⋯O halogen inter-a...

This study describes the organic synthesis of 5-(2-amimo-4-styryl pyrimidine-4-yl)-4-methoxy benzofuran-6-ol (SPBF) as an example of a benzofuran derivative used as a new series of amyloid imaging agents. These benzofuran derivatives may be useful amyloid imaging agents for detecting B-amyloid plagues in the brain of Alzheimer’s disease. The precursor is 1-[6-hydroxy-4-methoxybenzofuran-5-yl]-p...

The title compound, C(15)H(11)ClO(3)S, was prepared by the oxidation of 5-chloro-2-methyl-3-phenyl-sulfanyl-1-benzofuran with 3-chloro-peroxy-benzoic acid. There are two symmetry-independent mol-ecules in the asymmetric unit. The dihedral angles formed by the phenyl ring and the plane of the benzofuran system are 77.80 (8) and 78.34 (8)°. The crystal structure is stabilized by aromatic π-π stac...

A regioselective [3 + 2] cycloaddition of benzofuranone type active olefins with allenoates catalyzed by trivalent phosphines has been developed, which provided an easy access to enriched functionalized spirocyclic benzofuranones. The reactions accommodated a number of benzofuranone type electron-deficient olefins and allenoates to give the desired 3-spirocyclopentane benzofuran-2-ones or 2-spi...

In the title compound, C(16)H(12)Cl(2)O(2)S, the O atom and the methyl group of the methyl-sulfinyl substituent lie on opposite sides of the plane through the benzofuran fragment. The 4-chloro-phenyl ring is rotated out of the benzofuran plane, as indicated by the dihedral angle of 15.91 (4)°. In the crystal, mol-ecules are linked into chains along the b axis by weak inter-molecular C-H⋯O hydro...

The title compound, C(17)H(16)O(3)S, was prepared by the oxidation of 5-ethyl-2-methyl-3-phenyl-sulfanyl-1-benzofuran with 3-chloro-peroxy-benzoic acid. The phenyl ring makes a dihedral angle of 75.94 (8)° with the plane of the benzofuran fragment. The crystal structure is stabilized by π-π inter-actions between the furan rings of neighbouring mol-ecules [centroid-centroid distance = 3.620 (4) ...

In the title compound, C(15)H(10)FIO(2)S, the O atom and the methyl group of the methyl-sulfinyl substituent are located on opposite sides of the plane through the benzofuran fragment. The 4-fluoro-phenyl ring is rotated out of the benzofuran plane by a dihedral angle of 28.33 (5)°. The crystal structure is stabilized by a weak non-classical inter-molecular C-H⋯O hydrogen bond and an I⋯O haloge...

In the title compound, C(15)H(10)BrClO(3)S, the 4-bromo-substituted benzene ring forms a dihedral angle of 72.55 (6)° with the mean plane [mean deviation = 0.008 (2) Å] of the benzofuran ring system. In the crystal, mol-ecules are linked by weak C-H⋯O hydrogen bonds into chains along [001]. There are also π-π inter-actions between the furan and benzene rings of symmetry-related benzofuran syste...

The structure of the title compound, 1,3-diphenyl-2-benzofuran, C(20)H(14)O, exhibits a distinct alternation of short [mean 1.361 (3) Å] and long [mean 1.431 (3) Å] C-C bonds around the benzofuran ring system, indicating a predominantly polyene character. Over 60 Diels-Alder adducts of this commercially available furan have been structurally characterized, but this is the first report of the st...

The title compound, C(17)H(15)BrOS, was prepared by the Lewis acid-catalysed reaction of 2,4-dimethyl-phenol with 4'-bromo-2-chloro-2-(methyl-sulfan-yl)acetophenone. The 4-bromo-phenyl ring is rotated slightly out of the benzofuran plane, making a dihedral angle of 8.4 (1)°. The crystal structure is stabilized by a CH(2)-H⋯π inter-action between the 5-methyl group and the benzene ring of the be...