Catalytic asymmetric methallylation and propargylation of aldehydes with bis(((S)-binaphthoxy)(isopropoxy)titanium) oxide

New and highly efficient enantioselective methallylation and propargylation of achiral aldehydes with methallyltributyltin and allenyltributyltin, respectively, can be achieved with high enantioselectivity under the influence of chiral bis(((S)-binaphthoxy)(isopropoxy)titanium) oxide as catalyst. (C) 2003 Elsevier Science Ltd. All rights reserved.