(3E,5E)-3,5-Bis(4-allyl-oxybenzyl-idene)-1-benzyl-piperidin-4-one.

In the title compound C(32)H(31)NO(3), the all-yloxy groups on either side of the piperidin-4-one ring are conformationally disordered. The contribution of major and minor components of the allyloxy group at the 3rd position of the ring are 0.576†(4) and 0.424†(4), respectively, and those at the 5th position are 0.885†(3) and 0.115†(3), respectively. The six-membered piperidin-4-one ring adopts a sofa conformation with the benzyl group occupying an equatorial position and the olefinic double bonds possessing an E configuration. Flanking phenyl substituents are stretched out on either side of the six-membered ring. π-π inter-actions with a centroid-centroid distance of 3.885†(1)†à give rise to mol-ecular dimers and short C-H⋯π contacts lead to chains along the c axis.