Scope and Limitations of the Aromatic Anionic [1,3] P–O to P–C Rearrangement in the Synthesis of Chiral o -Hydroxyaryl Diazaphosphonamides
作者:Olivier Legrand、Jean Michel Brunel、Gérard Buono
DOI:10.1016/s0040-4020(99)00966-7
日期:2000.1
[1,3] P–O to P–C rearrangement in the synthesis of chiral o-hydroxyaryl diazaphosphonamides has been envisaged. Various strong bases such as LDA, sec-BuLi, tert-BuLi have been conveniently used. The scope of the regioselectivity of the rearrangement has been particularly studied varying the nature of the phenoxy group implied in this reaction. A totally diastereoselective P–O to P–C migration rearrangement
已经设想了在手性邻-羟基芳基二氮杂膦酰胺的合成中,芳香族阴离子[1,3] P–O到P–C重排中许多参数的影响。已经方便地使用了各种强碱,例如LDA,仲-BuLi,叔-BuLi。已经特别研究了重排的区域选择性的范围,从而改变了该反应中隐含的苯氧基的性质。从硫代膦酰胺的前体开始,观察到了完全非对映选择性的P到P的迁移重排。而且,从苯硫基取代的膦酰胺开始,二氮杂膦酰胺部分的整个非对映选择性的PS到PC的重排也得到了证明。