Patent ID: 6486338
Filing Date: 2002-11-26
Classification: C07F,C08G,C09K

Abstract:
A process for the preparation of organosilicon compounds (P) containing &agr;,&bgr;-unsaturated carboxylic acid radicals, of the general formula (1)â€”Aâ€”Oâ€”C(O)â€”CR&boxH;CH2â€ƒâ€ƒ(1), comprising reacting, 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;-Oâ€”C(O)â€”CRHâ€”CH2â€”Zâ€ƒâ€ƒ(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)â€”Aâ€”Oâ€”C(O)â€”CRHâ€”CH2â€”Zâ€ƒâ€ƒ(3), and, in a second step, eliminating Hâ€”Z compounds 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, and Z is Cl, I, Br or 4-methyltoluenesulfonyl.