A novel C-C bond forming reaction of aryl- and alkenylsilanols. A halogen-free Mizoroki-Heck type reaction

When dimethyl(phenyl)silanol is subjected to an electron-deficient olefin in the presence olf a stoichiometric amount of Pd(OAc)(2), substitution of the C-H bond of the olefin by a phenyl group on the silanol occurs in 52-86% yields. The reactions of several aryl- and alkenylsilanols with several olefins are also found to proceed in the system of 10 mol% of Pd(OAc)(2), Cu(OAc)(2) (3 mol), LiOAc (2 mol) to give the corresponding products in up to 69% yield. (C) 1998 Elsevier Science Ltd. All rights reserved.