Reagent, introduced by Olofson, and found to be superior to other chloroformates for dealkylation of tert-amines, e.g. N-alkylpiperidines to piperidines: J. Org. Chem., 49, 2081, 2795, 2081 (1984). For selective debenzylation of tert-amines, see: Synlett, 195 (1993). For reviews, see: Pure Appl. Chem., 60, 1715 (1988); Synthesis, 1 (1989).