Base‐Promoted Regiospecific Synthesis of Fully Substituted 1,2,3‐triazoles and 1,5‐disubstituted 1,2,3‐Triazoles

An efficient strategy have been developed for the synthesis of fully substituted 1,2,3‐triazoles and 1,5‐disubstituted 1,2,3‐triazoles subsequently by C−C bond cleavage. Regitz diazo‐transfer and C−C bond cleavage process were involved in this reaction to give 1,2,3‐triazoles with good substrate tolerance. This protocol provideed a facile and an expeditious approach for the assembly of diversely structural 1,2,3‐triazoles.