Studies on heterocyclic chemistry. Part X. Synthesis of aziridin-2-ylphosphonates by the thermally induced isomerization of isoxazoles in trialkyl phosphites. A related reaction of 2H-azirine
作者:Tarozaemon Nishiwaki、Toshinori Saito
DOI:10.1039/j39710003021
日期:——
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。