Cascade Reactions: A New Synthesis of 2-Benzofuran-2-ylacetamides by Sequential Pd(0)-Catalyzed Deallylation−Pd(II)-Catalyzed Aminocarbonylative Heterocyclization of 1-(2-Allyloxyaryl)-2-yn-1-ols
作者:Bartolo Gabriele、Raffaella Mancuso、Giuseppe Salerno、Mirco Costa
DOI:10.1021/jo701956k
日期:2007.11.1
general and efficientsynthesis of 2-benzofuran-2-ylacetamides 5 starting from 1-(2-allyloxyaryl)-2-yn-1-ols 1, amines 4, and CO, in the presence of catalytic amounts of PdI2 in conjunction with PPh3 and KI, has been developed based on the “sequential homobimetallic catalysis” concept, that is, a process in which two different complexes of the same metal, but in two different oxidation states, promote