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.