regio-, diastereo-, and enantiocontrolled access to alpha,beta-unsaturated delta-lactones is described, based on the reaction of a silyl dienolate and an aldehyde in the presence of 10 % of Carreira's catalyst. The scope and limitations of this reaction, as well as mechanistic insights concerning the reactivity of an allyl copper species, are discussed.
基于甲
硅烷基二烯酸酯和醛在10%Carreira催化剂存在下的反应,描述了直接的区域,非对映和对映体控制的α,β-不饱和δ-内酯。讨论了该反应的范围和局限性,以及有关烯丙基
铜物种反应性的机理见解。