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.