Regie-and chemospecific deallyloxycarbonylative aldol reaction of allyl (or-lie) α, α- disubstituted β-keto carboxylate with aldehyde was effectively promoted by Ni 0 (NiCl 2 (PPh 3) 2–Zn), in which the allyloxycarbonyl group (–COOCH 2 CH= CH 2) was replaced to 1- hydroxyalkyl group (–CH (OH) R, R= alkyl, vinyl, aryl) under mild reaction conditions.
