Preparation of organosilicon compounds containing &agr;, &bgr;-unsaturated carboxylic acids

US6486338B1 · kind B1 · utility

Assignee

• Consortium für elektrochemische Industrie GmbH · DE

Inventors

• Eckhard Hanelt · Geltendorf, DE
• Frank Sandmeyer · Altötting, DE
• Norman Haberle · Munich, DE
• Wolfram Schindler · Burgkirchen an der Alz, DE

Key dates

• Filing date: Jan 25, 2000
• Grant date: Nov 26, 2002
• Expiry date: Jan 25, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/045
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Organosilicon compounds (P) containing &agr;,&bgr;-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)&OHgr;—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), whereA is a divalent organic radical,&OHgr; is a monovalent organic radical containing a terminal double or triple bond,R is an H atom or a methyl radical, andZ is Cl, I, Br or 4-methyltoluenesulfonyl.