REGIOSELECTIVE HYDROSILATIONS .4. THE SYNTHESIS AND POLYMERIZATION OF MONOMERS CONTAINING EPOXY AND ALKOXYSILANE GROUPS

Using rhodium and platinum catalyzed regioselective hydrosilation, a series of alpha-hydrogen-omega-epoxy silane and siloxane compounds have been prepared in good yields. These intermediates have been further condensed with vinyltrimethoxysilane in subsequent hydrosilation reactions to prepare an interesting new class of ambifunctional monomers containing both epoxy and trimethoxysilane groups. It was further shown that these same compounds could be synthesized by a simplified ''one-pot'' two-step procedure. An investigation of the simultaneous cationic ring-opening polymerization of the epoxy groups and the acid-catalyzed condensation of the trimethoxysilyl groups was carried out. (C) 1993 John Wiley & Sons, Inc.