Highly efficient allylation of aldehydes and three-component synthesis of homoallylamines using bismuth triflate catalyst

Bismuth triflate catalyzed allylation of a variety of alde-hydes and aldimines using allyltributylstannane has been presented. The reaction proceeds rapidly and yields corresponding homoallylic alcohols and homoallylic amines in good yields. The bismuth triflate displays manifold activity over the La, Yb, and Sc triflates. The catalyst is reused for allylation of aldehydes and aldimines without significant loss of catalytic activity for four cycles.