4-Hydr­oxy-3-[(2E)-3-(3,4,5-trimethoxy­phen­yl)prop-2-eno­yl]-2H-chromen-2-one

A new chalcone of the coumarin, C(21)H(18)O(7), containing an annulated α-pyrone ring, was obtained by condensation of the borate complex of ac­yl(hydr­oxy)coumarin with trimethoxy­benzaldehyde. The structure exhibits intra­molecular hydrogen bonding between the hydroxyl oxygen and the ketonic oxyge...

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Detalles Bibliográficos
Autores principales: Mechi, Lassaad, Chtiba, Samar, Hamdi, Naceur, Ben Hassen, Rached
Formato: Texto
Lenguaje:English
Publicado: International Union of Crystallography 2009
Materias:
Organic Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2969351/
https://www.ncbi.nlm.nih.gov/pubmed/21582916
http://dx.doi.org/10.1107/S1600536809022569
Descripción
Sumario:A new chalcone of the coumarin, C(21)H(18)O(7), containing an annulated α-pyrone ring, was obtained by condensation of the borate complex of ac­yl(hydr­oxy)coumarin with trimethoxy­benzaldehyde. The structure exhibits intra­molecular hydrogen bonding between the hydroxyl oxygen and the ketonic oxygen in the coumarin group. The bicyclic coumarin fragment and the benzene ring form a dihedral angle of 17.1 (4)°. The crystal packing involves dimers inter­connected by C—H⋯O hydrogen bonding.

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