Oxoammonium salts as oxidizing agents: 2,2,6,6-tetramethyl-1-oxopiperidinium chloride

A study of the scope of the oxidizing ability of the oxoammonium chloride (1) revealed that phenols, enolizable ketones, phosphines, amines and anilines were reactive but that olefins, aromatic ethers, sulfides, and sulfones did not react.