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Updated: May 24, 2026

Facile Preparation of (2Z,4E)-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
(E)-3-(2-Bromo-phen-yl)-1-(3,4-dimeth-oxy-phen-yl)prop-2-en-1-one
Abstract:
The crystal structure of the title compound, C(17)H(15)BrO(3), a chalcone derivative, exhibits two crystallographically independent mol-ecules per asymmetric unit showing an E conformation about the ethyl-ene double bond. In each mol-ecule, the two phenyl rings are almost coplanar: the mean planes make dihedral angles of 9.3 (2) and 19.4 (2)°. In the crystal, mol-ecules are linked through weak inter-molecular C-H⋯O hydrogen bonds.
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