N-Tosyloxycarbamates as a Source of Metal Nitrenes:Rhodium-Catalyzed C-H Insertion and Aziridination Reactions

摘要

The activation of nitrogen derivatives with transition-metal complexes has attracted considerable attention in the past years.For instance,metal carbenes have been efficiently obtained from transition-metal-catalyzed decomposition of diazo compounds and led to numerous processes for C-C bond formation,including cyclopropanation,C-H insertion,and olefination reactions.In contrast to the well-defined reactivity of diazo compounds with transition-metal complexes,activation of azide derivatives to produce nitrene metal species is not common,although both reactions involve the loss of nitrogen(N_2).