[EN] PARTIALLY HYDROGENATED CHLOROSILANES AND METHODS FOR PREPARING SAME BY SELECTIVE HYDROGENATION<br/>[FR] CHLOROSILANES PARTIELLEMENT HYDROGÉNÉS ET LEURS PROCÉDÉS DE PRÉPARATION PAR HYDROGÉNATION SÉLECTIVE
申请人:EVONIK DEGUSSA GMBH
公开号:WO2020001955A1
公开(公告)日:2020-01-02
The present invention relates to a method for preparing partially hydrogenated chlorosilanes by selective hydrogenation with a compound of the formula R2AIH, wherein R is a branched or cyclic hydrocarbon. The present invention further refers to partially hydrogenated chlorosilanes prepared with said method, in particular to partially hydrogenated chlorosilanes represented by the formula Cl3SiSi(SiH3)3, (Cl3Si)2Si(SiH3)2 or HSi(SiH3)2SiCI3.
New pathways towards molecular chlorohydrooligosilanes enable their one-pot synthesis in preparative amounts either by the selective chlorination of the corresponding perhydrosilanes with HCl/AlCl3 or by the partial hydrogenation of perchlorooligosilanes with substoichiometric amounts of iBu2AlH. The unexpected selective formation of Cl3Si-substituted species in the partial hydrogenation reactions