Easily accessible 2-benzoylamino-3,3-dichloroacrylonitrile, when treated successively with primary amines, phosphorus pentachloride, sulfur dioxide, and various N- or S-nucleophiles, furnishes the corresponding derivatives of 1,2-dihydro-2lambda}sup 5}-[1,3]oxazolo[5,4-d][1,3,2]diazaphosphinine, a novel fused heterocycle. The structure of the compounds obtained is unequivocally confirmed by spectroscopic
容易获得的 2-苯甲酰
氨基-
3,3-二氯丙烯腈,当依次用
伯胺、
五氯化磷、
二氧化硫和各种 N-或 S-亲核试剂处理时,可提供 1,2-二氢-2λ}λ} sup 5}-[1,3]
恶唑并[5,4-d][1,3,2]二氮杂膦,一种新型稠合杂环。所得化合物的结构通过光谱方法和 X 射线衍射分析得到明确证实。