Gold-Catalyzed Intermolecular Hydrophenoxylation of Unactivated Internal Alkynes
作者:Malleswara Rao Kuram、M. Bhanuchandra、Akhila K. Sahoo
DOI:10.1021/jo1000143
日期:2010.4.2
A general and simple strategy for the synthesis of functionally diverse arylvinyl ethers is reported throughgold-catalyzed intermolecular addition of electronically and sterically substituted phenols with unactivated alkynes. Addition of phenols to unsymmetrical alkynes provides the corresponding mixture of regioisomers with appreciable selectivity. Multiple hydrophenoxylations of polyphenols with
Hydrophenoxylation of Alkynes by Cooperative Gold Catalysis
作者:Yoshihiro Oonishi、Adrián Gómez-Suárez、Anthony R. Martin、Steven P. Nolan
DOI:10.1002/anie.201304182
日期:2013.9.9
Double impact: The title method gives aryl vinylethers in high yields, short reaction times, Z‐stereospecificity, and good regioselectivities. Insights into the reaction mechanism highlight the role of [Au(NHC)}2(μ‐OH)][BF4] (NHC=N‐heterocyclic carbene) as both a Lewis acid, [Au(NHC)][BF4], and a Brønsted base, [Au(NHC)(OH)], thereby generating a synergistic effect between the two gold moieties.
Hydrophenoxylation of internal alkynes catalysed with a heterobimetallic Cu-NHC/Au-NHC system
作者:Faïma Lazreg、Stefano Guidone、Alberto Gómez-Herrera、Fady Nahra、Catherine S. J. Cazin
DOI:10.1039/c6dt04513h
日期:——
A dual catalytic process based on a heterobimetallic system, consisting of Cu-NHC and Au-NHC complexes, was shown to be highly active and selective for the hydrophenoxylation of internal alkynes.