CHEMOSELECTIVE HYDROSILATIONS .1. SYNTHESIS AND PHOTOPOLYMERIZATION OF 1-PROPENYL ETHER FUNCTIONALIZED SILOXANES

The synthesis of 1-propenyl ether-functionalized siloxanes (PFS) has been achieved by the controlled, rhodium-catalyzed, chemoselective hydrosilation of 1-allyloxy-4(1-propenoxy)butane with various H-functional siloxanes. It was shown that the hydrosilation proceeds exclusively at the allyl ether group of 1-allyloxy-4(1-propenoxy)butane without participation at the 1-propenyl ether group. The photoinduced cationic polymerization of these monomers was studied using various analytical techniques and found to take place very rapidly. (C) 1995 John Wiley & Sons, Inc.