PHOTOCHEMICAL GENERATION OF A NOVEL 8-MEMBERED-RING SILENE

Abstract

Photolysis of the silabicyclo[2.2.2.]octadiene 1 in the presence of methanol, methanol-d, or methoxy-trimethylsilane gives products arising from trapping a silaallylic 1,6-biradical, 1-phenyl-1-vinyl-2-neopentylsilene, and a cyclic eight-membered-ring silene, B, formed by the novel ring closure of the 1,6-biradical.