Process for preparing unsaturated organosilicon compounds

US6815554B2 · kind B2 · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Juergen Pfeiffer · Mehring, DE
• Peter John · Burghausen, DE

Key dates

• Filing date: Apr 10, 2002
• Grant date: Nov 9, 2004
• Expiry date: Sep 13, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/1892
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing unsaturated organosilanes containing organic carbonyloxy groups and having the formula(R1O)3−nR2nSi—X—OC(O)C(R3)═CR32  (I),where R1, R2, and R3 are hydrocarbon groups optionally containing interspersed ether linkages, and optionally substituted, X is an alkylene group, optionally containing ether linkages, and n is 0 to 3,by reacting haloorganofunctional silicon compounds of the formula(R1O)3−nR2nSi—X—Y  (II),where Y is a halogen atom,with a salt of an unsaturated organic carboxylic acid of the formulaM+[−OC(O)C(R3)═CR32]o  (III),where M is an alkali or alkaline earth metal and o is 0 or 1 depending on the valence of M, in the presence of a phosphonium salt as phase transfer catalyst.