Photochemically Generated Arylnitrenium Ions: Laser Flash Photolysis and Product Studies of the Photochemistry of N-tert-Butyl-3-methyl-6-chloroanthranilium Ions

摘要

Nitrenium ions are electrophilic reactive intermediates which contain a divalent nitrogen atom. Much of the recent interest in these species is due to the possible role of aryl-substituted nitrenium ions in chemical carcinogenesis. Other studies have explored applications of nitrenium ion chemistry to organic synthesis. Theoretical investigations have examined the electronic structure of nitrenium ions. Like carbenes and nitrenes, nitrenium ions can exist in either a singlet state or a triplet state (Figure 1). While the parent system, NH_2~+, is a ground-state triplet, aryl substitution is predicted to make the singlet the ground state.