(2E,5E)-2,5-Bis(3,4,5-trimethoxy­benzyl­idene)cyclo­penta­none

Sun, Y.-F.; Liu, Y.; Zhang, F.-Y.; Chen, H.-J.; Cui, Y.-P.

doi:10.1107/S1600536808029474

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Acta Crystallographica Section E

Structure Reports Online

Volume 64, Part 10 (October 2008)

organic compounds

Acta Cryst. (2008). E64, o1964 [ doi:10.1107/S1600536808029474 ]

(2E,5E)-2,5-Bis(3,4,5-trimethoxybenzylidene)cyclopentanone

Y.-F. Sun, Y. Liu, F.-Y. Zhang, H.-J. Chen and Y.-P. Cui

Abstract: The title compound, C₂₅H₂₈O₇, was prepared by the base-catalysed reaction of 3,4,5-trimethoxybenzaldehyde with cyclopentanone. The molecule has crystallographic twofold rotation symmetry and adopts an E-configuration about the central olefinic bonds. The two benzene rings and the central cyclopentanone ring are almost coplanar [dihedral angle = 4.7 (2)°].