PREPARATION OF ALKYL (AMINO) DIALKOXYSILANES

摘要

Alkyl (amino) dialkoxysilanes are prepared by anhydrously reacting stoichiometric amounts of an alkoxysilane and an alkylamino-magnesium chloride in a reverse addition process. The alkylamino magnesium chloride is preferably prepared in situ by the reaction of a Grignard reagent (RMX) and an alkylamine in a suitable aprotic solvent, su ch as tetrahydrofuran. The "alkyl" substituent can be alkyl, arylalkyl or aryl. The reaction can be conducted in the temperature range of from 25 .degree.C to 75 .degree.C, without a catalyst, and the aprotic solvent is recovered for re-use in the process.