A Facile Synthesis of Enantiopure 2-Aziridinesulfinimines and Their Highly Diastereoselective Reactions with Phosphite Anions
作者:Bin-Feng Li、Ming-Jie Zhang、Xue-Long Hou、Li-Xin Dai
DOI:10.1021/jo016106+
日期:2002.5.1
Two novel enantiopure 1-benzyl-2-aziridinesulfinimines bearing a chiral group on both sides of the carbon-nitrogen double bond were synthesized from the condensation of racemic 1-benzyl-2-aziridinecarboxaldehyde and enantiopure p-toluenesulfinamide. The addition reaction with phosphite anion followed by the ring-opening reaction with thiophenol provided chiral alpha,beta-diamino-phosphonic acid derivatives
由外消旋的1-苄基-2-氮杂吡啶甲醛与对映体纯的对甲苯磺酰胺缩合,合成了两个在碳氮双键两侧均带有手性基团的新型对映体纯的1-苄基-2-氮丙啶亚磺胺。与亚磷酸根阴离子的加成反应,然后与苯硫酚的开环反应,提供了手性的α,β-二氨基膦酸衍生物。加成反应显示出双重立体分化作用。提出了该反应的可能的过渡态,并且在存在或不存在溴化锌的情况下,实现了亚磷酸根阴离子与两种氮丙啶亚砜亚胺加成反应的高非对映选择性。