Process for preparing organosilanes

US4158010A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Werner Graf · Chur, CH
• Peter John · Burghausen, DE
• Volker Frey · Burghausen, DE

Key dates

• Filing date: May 3, 1978
• Grant date: Jun 12, 1979
• Expiry date: May 3, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/125
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

An improved process for converting an organosilane which comprises reacting at least one silane (A) having the formula EQU R.sub.a SiCl.sub.4-a with at least one silane (B) which differs from silane (A) and has the formula EQU R.sub.b SiCl.sub.4-b in the presence of an organoaluminum compound having the formula EQU R.sub.c.sup.1 AlY.sub.3-c and at least one silane (C) having the formula EQU R.sub.b H.sub.c SiCl.sub.4-b-c and from 0.1 to 5 percent by weight based on the weight of silanes (A), (B) and (C) of a hydrogen halide, in which R is a hydrocarbon radical having from 1 to 10 carbon atoms and is free of aliphatic unsaturation, R.sup.1 is an alkyl radical having from 1 to 4 carbon atoms, Y is selected from the group consisting of halogen, hydrogen or hydrocarbon radicals having from 1 to 10 carbon atoms which are bonded to the aluminum via oxygen and are free of aliphatic unsaturation, a is 2, 3 or 4, b is 0, 1, 2 or 3 and c is 1, 2 or 3 and the sum of b+c cannot exceed 4.