نتایج جستجو برای: benzofuran chalcones
تعداد نتایج: 2418 فیلتر نتایج به سال:
In the title compound, C(21)H(15)ClO(2)S, the O atom and the phenyl group of the phenyl-sulfinyl substituent lie on opposite sides of the plane of the benzofuran fragment; the phenyl ring is almost perpendicular to this plane [82.24 (7)°]. The phenyl ring in the 2-position is rotated out of the benzofuran plane, making a dihedral angle of 11.50 (9)°. The crystal structure is stabilized by inter...
In the title compound, C(20)H(12)BrFO(2)S, the 4-fluoro-phenyl ring makes a dihedral angle of 2.63 (6)° with the mean plane of the benzofuran fragment. The dihedral angle between the phenyl ring and the mean plane of the benzofuran fragment is 84.60 (6)°. In the crystal, mol-ecules are linked by weak inter-molecular C-H⋯O hydrogen bonds, and slipped π-π inter-actions between the benzene rings o...
Various indolyl chalcones have been synthesized in unsealed vessels in a domestic microwave oven. Considerable increase in the reaction rate has been observed with better yields.
The title compound, C(12)H(11)FO(3)S, was prepared by alkaline hydrolysis of ethyl 2-(3-ethyl-sulfan-yl-5-fluoro-1-benzofuran-2--yl) acetate. In the crystal structure, the carboxyl groups are involved in inter-molecular O-H⋯O hydrogen bonds, which link the mol-ecules into centrosymmetric dimers. These dimers are further packed into stacks along the b axis by aromatic π-π inter-actions between t...
A one pot synthesis of an array of angularly linked tri-heterocycles with coumarin, benzofuran and furan rings is described. This high yielding synthesis is achieved by the reaction of various 4-bromomethylcoumarins with furyl o-hydroxyphenyl ketones involving benzylic nucleophilic displacement and intramolecular aldolization. All the compounds have been tested in vitro for their anti-microbial...
In the title compound, C(15)H(17)BrO(4)S, the methyl-sulfinyl O atom and the methyl substituents lie on opposite sides of the plane through the benzofuran fragment. The crystal structure is stabilized by π-π inter-actions between the benzene rings of neighbouring mol-ecules [centroid-centroid distance = 3.698 (4) Å], and by C-H⋯π inter-actions between a methyl-ene H atom of the butyl group and ...
In the title compound, C(18)H(18)O(2)S, the O atom and the phenyl group of the phenyl-sulfinyl substituent lie on opposite sides of the planar benzofuran fragment. The phenyl ring is nearly perpendicular to the benzofuran system [88.56 (7)°] and is tilted slightly towards it. Molecules form pseudo-helices along the a axis. The crystal structure is stabilized by a C-H⋯π inter-action between a me...
The title compound, C(18)H(18)O(3)S, was prepared by the oxidation of 5-isopropyl-2-methyl-3-phenyl-sulfanyl-1-benzofuran with 3-chloro-peroxy-benzoic acid. The phenyl ring makes a dihedral angle of 79.37 (6)° with the plane of the benzofuran fragment. The crystal structure is stabilized by aromatic π-π stacking inter-actions between the benzene and furan rings of neighbouring mol-ecules [centr...
Highly enantioselective aziridination of chalcones catalyzed by a novel backbone 1,8-bisoxazolidinylanthracene (AnBOX) and CuOTf with up to >99% ee and the opposite enantioselectivity compared with the ligands of Evans are described.
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