Microwave-assisted generation of carbazolyl nitrenium cation

Abstract

Carbazolyl nitrenium cations were generated during microwave irradiation of 1-carbazol-9-yl-2,4,6-triphenylpyridinium tetrafluoroborate in trifluoroethanol- and TFA - arenes mixtures to give desired electrophilic substitution reaction products. Unlike under conventional conditions (thermolysis and photolysis) the parent amine, carbazole, and other side product were detected only in trace amounts.