Novel aziridination of α-halo ketones: an efficient nucleophile-induced cyclization of phosphoramidates to functionalized aziridines
作者:Lal Dhar S. Yadav、Ankita Rai、Vijai K. Rai、Chhama Awasthi
DOI:10.1016/j.tetlet.2007.11.130
日期:2008.1
A novel and efficient aziridination of α-halo ketones is reported. The reaction of α-halo ketones with diethyl N-arylphosphoramidates affords diethyl N-aryl-N-(2-oxoalkyl)phosphoramidates which undergo reductive (H−-induced) cyclization with sodium borohydride followed by sodium hydride to give 1,2-disubstituted and 1,2,3-trisubstituted aziridines. The cyclization induced by NCS− or PhS− affords substituted
报道了一种新颖且有效的α-卤代酮的叠氮化。α卤代酮用二反应Ñ -arylphosphoramidates得到二乙ñ -芳基- ñ -其经历(2-氧代烷基)磷酸酯的还原(H -诱导的),接着环化用硼氢化钠由氢化钠,得到1,2-二取代和1,2,3-三取代的氮丙啶。通过NCS诱导的环化-或PHS -取代的C-2官能氮丙啶,得到。该反应具有优异的收率,并且对非对映体选择性高,有利于顺式氮丙啶。