Interaction of N-vinyl-2-pyrrolidone with surface of hydride silica

The solid-phase thermal and catalytic hydrosilylation of N-vinyl-2-pyrrolid one on the surface of hydride silicas has been studied. It was found that t hermal polymerization of N-vinyl-2-pyrrolidone is a side reaction of the th ermal hydrosilylation of N-vinyl-2-pyrrolidone. During the catalytic hydros ilylation of N-vinyl-2-pyrrolidone, two side reactions took place. These we re the interaction of the silicon-hydride groups with water and with propan ol-2 and the formation of metallic platinum. The thermal hydrosilylation of N-vinyl-2-pyrrolidone, without the use of catalyst and solvent, is the pre ferred method for the chemical bonding of N-vinyl-2-pyrrolidone in the surf ace layer of hydride silicas. (C) 2000 Elsevier Science B.V. All rights res erved.