Unexpected oxidation of a nitroxide alcohol with m-chloroperbenzoic acid
Abstract
Oxidation of 2,2,6,6-tetramethylpiperidin-4-ol (1a) with m-chloroperbenzoic acid in methylene chloride produces, in addition to the expected nitroxide (1b), varying amounts of 4-oxo-2,2,6,6-tetramethylpiperidin-1-oxyl (2).