A Novel Synthesis of 1-Aryl-1H-benzotriazoles via Oxidative C-H Amination
摘要:
A facile, novel and regiospecific protocol for the synthesis of 1-aryl-1H-benzotriazoles via oxidative C-H amination of corresponding 1,3-diaryltriazenes in DMF in the presence of K(2)CO(3) at moderate temperature was developed.
A method for the C-H activation of aryl triazene compounds followed by intramolecular amination is described. It involves the use of a catalytic amount of Pd(OAc)(2) that efficiently effects the cyclization to provide 1-aryl-1H-benzotriazoles at moderate temperature.
Kym; Ringer, Chemische Berichte, 1915, vol. 48, p. 1676