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-haloketones is reported. The reaction of α-haloketones 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