Reaction of hydrosilanes with alkynes catalyzed by gold nanoparticles supported on TiO2
作者:Androniki Psyllaki、Ioannis N. Lykakis、Manolis Stratakis
DOI:10.1016/j.tet.2012.08.021
日期:2012.10
Gold nanoparticles supported on TiO2 (0.8–1.4 mol %) catalyze the β-(E) regioselective hydrosilylation of a variety of functionalized terminal alkynes with alkylhydrosilanes in 1,2-dichloroethane (70 °C). The product yields are excellent, and the reaction times relatively short, while almost equimolar amounts of alkynes and hydrosilanes can be used. Minor side-products in up to 35% relative yield of
Silylzincation of carbon–carbon multiple bonds revisited
作者:Gertrud Auer、Martin Oestreich
DOI:10.1039/b513528a
日期:——
The first investigation of the copper-catalyzed silylzincation of alkynes as well as a diene and styrene using bis(triorganosilyl) zinc reagents led to the development of an efficient procedure and the disclosure of an unexpected bissilylation and unforeseen regioselectivity.