Reaction of 6-Oxa-3-Silabicyclo(3.1.0)hexanes with Phosphinimines. Synthesis of 6-Vinyl-1,3-dioxa-2,4-Disilacyclohexanes

摘要

Reaction of 3,3-dimethyl-6-oxa-3-silabicyclo-hexane with N-benzyltriphenylphosphinimine yields 1,3-butadiene and 2,2,4,4-tetramethyl-6-vinyl-1,3-dioxa-2,4-disilacyclohexane (3). A mechanism for the formation of 3 which involves the reaction of dimethylsilanone (CH3)2Si=0) with 2,2-dimethyl-4-vinylsiloaxetane is proposed. Keywords: Dimethylsilanone, Phosphinimine, Silaoxetane, Phosphines, Silanes.