A rhodium-copper-TBAF-catalyzed hydroarylation of alkynes with aryl trimethoxysilanes is described. The procedure utilizes a catalytic amount of copper(II) acetate, rhodium, PPh3 and TBAF center dot 3H(2)O under air. Some asymmetric alkynes gave the products with high regioselectivities. (C) 2009 Elsevier Ltd. All rights reserved.
Chalezkii; Kaplan, Zhurnal Obshchei Khimii, 1955, vol. 25, p. 1496,1498; engl. Ausg. S. 1445, 1446