A Stable Homodinuclear Biscobalt(III)-Schiff Base Complex for Catalytic Asymmetric 1,4-Addition Reactions of beta-Keto Esters to Alkynones

摘要

Bifunctional cooperative asymmetric catalysis is currently a popular research topic in organic synthesis.Various bifunctional metal and organocatalysts have been reported during the last decade.As part of our ongoing research into this issue,we recently reported the utility of cooperative bimetallic complexes of the Schiff base 1(Scheme 1),the catalytic properties of which differed from those of well-established monometallic salen complexes.