Asymmetric Organocatalytic Formal Alkynylation and Alkenylation of α,β-Unsaturated Aldehydes
作者:Martin Nielsen、Christian Borch Jacobsen、Márcio W. Paixão、Nicole Holub、Karl Anker Jørgensen
DOI:10.1021/ja903920j
日期:2009.8.5
stereoselective organocatalytic one-pot protocol for the formal alkynylation and alkenylation of alpha,beta-unsaturated aldehydes using novel chemistry based on beta-keto heterocyclic sulfones is presented. The organocatalytic step is catalyzed by a prolinol derivative and allows for the formation of important optically active compounds. Further transformations of the beta-keto heterocyclic sulfone moiety,