The reaction of 3-phenyl-2-phenylethynyl-1,3,2λ3-oxazaphospholidine with nitrilimines is a multistep process involving formation of the diazaphosphorine ring and cleavage of the oxazaphospholidine ring. The final products are the substituted 4-[N-phenyl-N-(2-chloroethyl)amino]-1,4-dihydro-1,2,4λ5-diazaphosphorines. According to X-ray structural data obtained for 4-[N-phenyl-N-(2-chloroethyl)amino]-1,4-dihydro- 1,5-diphenyl-3-ethoxycarbonyl-1,2,4λ5-diazaphosphorine, the heteroring of these compounds has the conformation of a flattened P-envelope.
3-苯基-2-苯基
乙炔基-1,3,2λ3-恶氮
磷啶与氮
亚胺的反应是一个多步骤过程,涉及二氮杂
磷环的形成和恶氮
磷环的裂解。最终产物是取代的4-[N-苯基-N-(2-
氯乙基)
氨基]-1,4-二氢-1,2,4λ5-二氮杂膦。根据4-[N-苯基-N-(2-
氯乙基)
氨基]-1,4-二氢-1,5
-二苯基-3-乙氧基羰基-1,2,4λ5-二氮杂膦的X射线结构数据,这些化合物的杂环具有扁平的P-包络构象。