Reaction of the lithium enolate of acetaldehyde, Li(OCHCH2), with cyclothiaphosphazenes

Abstract

Reactions of the lithium enolate of acetaldehyde, Li(OCHCH₂), with the mixed ring systems [NS(O)Ph]_3–n(NPCl₂)_n(n= 1 or 2) lead to a complete series of vinyloxy derivatives. The vinyloxy group is stable in subsequent substitution reactions using amines as nucleophiles. The compound [NS(O)Ph]NPCl₂[NPCl(OCHCH₂)] is a useful precursor in polymerization reactions.