Preparation of acyloxyalkoxysilanes

US5817853A · kind A · utility

Inventors

• Holger Friedrich · Frankenthal (Pfalz), DE
• Bernd Leutner · Bischofswerda, DE
• Norbert Mronga · Dossenheim, DE
• Raimund Schmid · Neustadt, DE

Key dates

• Filing date: Aug 12, 1997
• Grant date: Oct 6, 1998
• Expiry date: Aug 12, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing a silane of the formula I EQU R.sup.1.sub.n SiR.sup.2.sub.m (I) where R.sup.1 is --O--Y, n is an integer from 1 to 3, R.sup.2 is ##STR1## m is an integer from 1 to 3 and n+m=4, and Y and Z are each, independently of one another, unsubstituted or mono- or polyhalo-substituted C.sub.1 --C.sub.20 -alkyl, C.sub.2 --C.sub.20 -alkenyl, C.sub.2 --C.sub.20 -alkynyl and --(CH.sub.2).sub.p --A, where p is an integer from 0 to 6 and A, which is unsubstituted or substituted by one or more C.sub.1 -C.sub.6 -alkyls, is a 3- to 20-membered hydrocarbon ring entails reacting a halosilicon compound of the formula II EQU SiX.sub.4 (II) where X is fluorine, chlorine, bromine and iodine, with compounds of the formula III and IV, or with an anhydride of the formula V and the compound of the formula IV ##STR2## where R.sup.1 and R.sup.2, and Z have the above meanings, M is a metal of main group one and two.