Palladium-catalyzed carbonyl allylation by allylic alcohols with stannous chloride

Allylation of carbonyls via activation of allylic alcohols on palladium catalysts is reported. SnCl{sub 2} acts as a reducing agent. Regioselectivity of the reactions was evaluated in terms of solvent effects. Further, reaction intermediates were observed by NMR. 46 refs., 14 figs., 5 tabs.