Transformations of 3-aryl-2-chloro-2-imidoylaziridines: novel entries to 4-chloro-2,5-diaryl-1H-imidazoles and 2-chloro-2-acylaziridines
作者:Filip Colpaert、Sven Mangelinckx、Nicola Giubellina、Norbert De Kimpe
DOI:10.1016/j.tet.2010.11.082
日期:2011.2
The reactivity of stereochemically defined 3-aryl-2-chloro-2-imidoylaziridines, an unexplored class of substituted aziridines, was investigated under various reaction conditions. 2-Chloro-2-imidoylaziridines underwent a novel thermal rearrangement by reflux in acetonitrile via C–C bond cleavage to 4-chloro-2,5-diarylimidazoles in high yield. Alternatively, a novel efficient entry toward 2-aroyl-2-chloroaziridines
在各种反应条件下研究了立体化学定义的3-芳基-2-氯-2-亚氨基酰基氮丙啶(未开发的取代氮丙啶类)的反应性。2-氯-2-亚氨基酰基氮丙啶通过在乙腈中的回流,通过C-C键高产率裂解为4-氯-2,5-二芳基咪唑,经历了新的热重排。或者,一种新的有效进入2-芳酰基-2-氯氮丙啶的方法是基于在含水四氢呋喃中用盐酸化学选择性水解2-氯-2-酰亚胺基氮丙啶。