New method for the preparation of of organosilicon monomers by the high-temperature condensation of alkenyl chlorides, aryl chlorides, and olefins with silanes containing silicon-attached hydrogen

Abstract

1. The high-temperature condensation (600–700°) of alkenyl and aryl chlorides with hydride silanes (i.e., silanes containing silicon-attached hydrogen) in a flow system at atmospheric pressure is a general method for the synthesis of alkenyl- and aryl-chlorosilanes. On the basis of this new method we developed syntheses, differing from those known previously in their simplicity and high yields, for various organosilicon monomers. 2. A reaction scheme is proposed for the high-temperature condensation of hydride silanes with alkenyl and aryl chlorides; the scheme requires the participation of free radicals. 3. A new reaction of hydride silanes with olefins leading to the formation of alkenylchlorosilanes was discovered.