A Metal-Ligand Cooperative Pathway for Intermolecular Oxa-Michael Additions to Unsaturated Nitriles
作者:Sébastien Perdriau、Douwe S. Zijlstra、Hero J. Heeres、Johannes G. de Vries、Edwin Otten
DOI:10.1002/anie.201412110
日期:2015.3.27
activation of the nitrile through metal–ligand cooperativity is a keystep. The nitrile‐derived Ru‐N moiety is sufficiently Brønsted basic to activate the alcohol and initiate conjugateaddition of the alkoxide to the α,β‐unsaturated fragment. This reaction proceeds in a concerted manner and involves a six‐membered transition state. These features allow the reaction to proceed at ambient temperature in the