CuBr₂@g‐C₃N₄‐Catalyzed Highly Selective Aerobic Oxidation of Alcohol and Toluene Derivatives

Abstract

Polymeric graphitic carbon nitride (g‐C3N4) supported CuBr2 hybrid material (CuBr2@g‐C3N4) was developed by impregnation of CuBr2 on g‐C3N4 sheets. The morphology and physiochemical properties were analyzed by powder XRD, SEM, and HRTEM studies. The hybrid CuBr2@g‐C3N4 material showed excellent selectivity in the aerobic oxidation of primary/secondary alcohols and benzoins to the corresponding carbonyl compounds in absence of any oxidizing agents. Further, CuBr2@g‐C3N4 demonstrated direct oxidation of toluene derivatives to corresponding aldehydes in excellent yields. The g‐C3N4 support provides excellent stability and heterogeneity to CuBr2 and was recovered simply by filtration and reused for ten times without appreciable loss in catalytic activity.