Improved procedure for the synthesis of enamine N-oxides

J Org Chem. 2008 Jun 6;73(11):4229-32. doi: 10.1021/jo8002166. Epub 2008 May 7.

Abstract

An improved procedure for the preparation of enamine N-oxides involving aminolysis of epoxides, chlorination, N-oxidation, and dehydrochlorination is described. Although isolated beta-chloroamine N-oxides are prone to rearrangements when isolated, these side reactions can be slowed by the presence of stabilizing organic acids. The scope and limitations of this strategy are discussed.