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Updated: Jun 1, 2026

Facile Preparation of (2Z,4E)-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
(2E)-1-(2,5-Dimethyl-3-thien-yl)-3-(2-meth-oxy-phen-yl)prop-2-en-1-one
Abstract:
In the title compound, C(16)H(16)O(2)S, the central propenone group is almost planar (r.m.s. deviation = 0.009 Å) and subtends dihedral angles of 8.55 (8) and 16.22 (8)° to the 2-meth-oxy-phenyl and 2,5-dimethyl-thio-phene residues, respectively. The dihedral angle between the ring systems is 23.47 (5)°. In the crystal, mol-ecules are linked by weak C-H⋯π inter-actions and aromatic π-π stacking [phenyl ring centroid-centroid separation = 3.6418 (11) Å; thio-phene-thio-phene ring separation = 3.8727 (9) Å].
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