Gerard Simon

Nouvelles syntheses de Me2SiCl2 et Me3SiCl

Abstract Partial reduction of MeSiCl 3 and Me 2 SiCl 2 using CaH 2 or (TiH 2 ) n at high temperature (300°C) leads to MeSiHCl 2 and Me 2 SiHCl, respectively, in good yields but in low proportion. In the presence of AlCl 3 as catalyst the reaction affords Me 2 SiCl 2 and Me 3 SiCl, in yields higher than those previously observed in the absence of a reducing agent. These redistribution reactions involve MeSiHCl 2 and Me 2 SiHCl as intermediates. Consequently Me 2 SiHCl with or without Me 2 SiCl 2 and Alcl 3 deposited on carbon black as catalyst can undergo disproportionation to give Me 3 SiCl.