作者:Scott E. Denmark、Naoto Chatani、Sunil V. Pansare
DOI:10.1016/s0040-4020(01)88883-9
日期:1992.1
The asymmetric electrophilic amination of phosphorus-stabilized anions derived from chiral oxazaphosphorinanes and diazaphospholidines is described. Trisyl azide is the reagent of choice for the amination process. The reaction is shown to be dependent on auxiliary structure, nature of the P-alkyl substituent and choice of amination procedure. Using the oxazaphosphorinanes 1a and cis-1e a high level
描述了衍生自手性氧杂氮磷腈和二氮磷吡啶的磷稳定阴离子的不对称亲电胺化反应。三叠氮化物是胺化过程的首选试剂。已表明该反应取决于辅助结构,对-烷基取代基的性质和胺化方法的选择。使用草氮磷膦酸酯1a和cis-1e可以实现高水平的不对称诱导。在(S)对映体中,Scalemic cis-1e提供具有92%ee的α-氨基膦酸13。讨论了构象和辅助结构对立体选择性的影响。