Homogeneous Gold-Catalyzed Oxidative Carboheterofunctionalization of Alkenes
作者:Guozhu Zhang、Li Cui、Yanzhao Wang、Liming Zhang
DOI:10.1021/ja909555d
日期:2010.2.10
Homogeneous carboamination, carboalkoxylation and carbolactonization of terminal alkenes are realized via oxidative gold catalysis, providing expedient access to various Substituted N- or O-heterocycles. Deuterium-labeling studies established the anti nature of the alkene functionalization and the indispensible role of Au(I)/Au(III) catalysis. This study constitutes the first example of catalytically converting C(sp(3))-Au bonds into C(sp(3))--C(sp(2)) bonds in a cross-coupling manner and opens new opportunities to Study gold alkene catalysis where alkylgold intermediates can be readily functionalized intermolecularly.
Gold-Catalyzed Intramolecular Aminoarylation of Alkenes: CC Bond Formation through Bimolecular Reductive Elimination
作者:William E. Brenzovich、Diego Benitez、Aaron D. Lackner、Hunter P. Shunatona、Ekaterina Tkatchouk、William A. Goddard、F. Dean Toste
DOI:10.1002/anie.201002739
日期:——
Gold‐ilocks and the 3 mol % catalyst: Bimetallic gold bromides allow the room temperature aminoarylation of unactivated terminal olefins with aryl boronic acids using Selectfluor as an oxidant. A catalytic cycle involving gold(I)/gold(III) and a bimolecular reductive elimination for the key CC bond‐forming step is proposed. dppm= bis(diphenylphosphanyl)methane.