Iminium-ion activation as an efficient strategy for divergent synthesis of optically active propargylic, homopropargylic, and allenic compounds

Abstract

Assemble and build: The strategy depicted above merges different organocatalyzed conjugate addition reactions with the Seyferth-Gilmann homologation by which diverse opti-cally active propargylic, homopropargylic and allenic products can be assembled in high yields and enantioselectivities © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.