Preparation of organosilicon compounds containing α, β-unsaturated carboxylic acids

Abstract

Organosilicon compounds (P) containing α,β-unsaturated carboxylic acid radicals, of the general formula (1) —A—O—C(O)—CR═CH2   (1), are prepared by a process in which, in a first step, organosilicon compounds (H) containing hydrogen atoms bonded directly to silicon are reacted with olefinically unsaturated compounds (U) containing a terminal double or triple bond, of the general formula (2) Ω—O—C(O)—CRH—CH2—Z  (2), in the presence of metals or compounds from the platinum group as catalyst, to give organosilicon compounds (E) containing radicals of the general formula (3) —A—O—C(O)—CRH—CH2—Z  (3), and, in a second step, H—Z compounds are eliminated from organosilicon compounds (E), where A is a divalent organic radical, Ω is a monovalent organic radical containing a terminal double or triple bond, R is an H atom or a methyl radical, and Z is Cl, I, Br or 4-methyltoluenesulfonyl.

Dependencies are inferred from the claim text.