New Allyl Derivative of Curcumin: Synthesis and Crystal Structure of (1E, 6E)-4-Allyl-1,7-bis(4′-Allyloxy-3′-Methoxyphenyl)hepta-1,6-Diene-3,5-Dione

New allyl derivative of curcumin containing three allyl groups (1E,6E)-4-allyl-1,7-bis(4’-allyloxy-3’-methoxyphenyl)hepta-1,6-diene-3,5-dione was synthesized by the reaction of curcumin with the excess of allyl bromide in the presence of K2CO3 in acetone under reflux. The triple allylated curcumin was characterized by 1H and 13C NMR spectroscopy and single-crystal X-ray diffraction study.