The reactions of isoxazoles and of 2H-azirines with trialkyl phosphite have been studied. 5-Amino-3-arylisoxazoles and 3-aryl-2H-azirine-2-carboxamides afford aziridin-2-ylphosphonates whereas 5-methoxy-3-phenylisoxazole gives an aziridine dimer which has a phosphonyl group at C-2. 5-Amino-3,4-diphenylisoxazole, 2,3-diphenyl-2H-azirine-2-carboxamide, and related compounds produce Δ4-oxazolin-2-ylphosphonates
已经研究了
异恶唑和2 H-
叠氮基与
亚磷酸三烷基酯的反应。5-
氨基-3-芳基
异恶唑和3-芳基-2- ħ -azirine -2-甲酰胺,得到
氮丙啶-2- ylphosphonates而-
5-甲氧基-3-苯基异恶唑给出了在C-2具有膦酰基
氮丙啶二聚体。5-
氨基-3,4- diphenylisoxazole,2,3
-二苯基-2- ħ -azirine -2-甲酰胺,和相关化合物产生Δ 4 -oxazolin -2- ylphosphonates通过
氮丙啶-2- ylphosphonates。这些反应的机理可以通过
亚磷酸三烷基酯对2 H-
叠氮基的C N键的亲核攻击来解释。