Functional rearrangement of polychlorinated pyrrolidin-2-ones to 5-imino-lactams promoted by n-propylamine
作者:Chiara Danieli、Franco Ghelfi、Adele Mucci、Ugo M. Pagnoni、Andrew F. Parsons、Mariella Pattarozzi、Luisa Schenetti
DOI:10.1016/j.tet.2004.09.073
日期:2004.12
The reaction of 4-methyl-pyrrolidin-2-ones, chlorinated at the C(3) and C(6) positions, with n-propylamine constitutes a new method for the preparation of 5-propylimino-pyrrolidin-2-ones or 3-pyrrolin-2-ones in generally good yields. The transformation involves a series of eliminations, substitutions and double bond shifts. This constitutes a remarkable example of a functional rearrangement.
在C(3)和C(6)位置氯化的4-甲基-吡咯烷-2-酮与正丙胺的反应构成了制备5-丙基亚氨基-吡咯烷-2-酮或3的新方法-吡咯啉-2-酮通常具有良好的收率。转化涉及一系列消除,取代和双键移位。这构成了功能重新布置的显着示例。