Photocatalytic synthesis of aryltriazenes by CulnS2/K-C3N4 heterojunctions

An efficient protocol for the synthesis of triazenes has been established, utilising a Z-scheme CuInS₂/K-C₃N₄ heterojunction as a photocatalyst in cyclopentyl methyl ether. This method enables the synthesis of a wide range of aryl triazenes with excellent yields and remarkable functional group tolerance, utilizing diazonium salts and secondary amines as substrates. The feasibility and robustness of this approach are further underscored by the CuInS₂/K-C₃N₄ photocatalyst's ability to be recycled and reused multiple times without significant loss of catalytic activity.