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Updated: Apr 25, 2026

Facile Preparation of 2Z,4E-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
(E)-1-([1,1'-Biphen-yl]-4-yl)-3-(2-methyl-phen-yl)prop-2-en-1-one
D Shanthi1, T Vidhya Sagar1, M Kayalvizhi2
1Department of Chemistry, Annamalai University, Annamalai Nagar 608 002, Tamilnadu, India.
Abstract:
In the title mol-ecule, C22H18O, the o-tolyl ring is connected through a conjugated double bond. The mol-ecule adopts an E conformation and the C-C=C-C torsion angle is 178.77 (13)°. The overall conformation may be described by the values of dihedral angles between the different planes. The terminal rings are twisted by an angle of 54.75 (8)°, while the biphenyl part is not planar, the dihedral angle between the planes of the rings being 40.65 (8)°. The dihedral angle between the benzene rings is 14.10 (7)°. There are three weak C-H⋯π inter-actions found in the crystal structure. No classic hydrogen bonds are observed.
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