Since the oxidation of benzoin to benzil was developed using chlorine or nitric acid over 180 years ago , many homogenous or heterogenous catalytic oxidation processes have been developed using Tempo, Palladium, Gold, Fe3O4, etc., and the commonly used oxidants were O2, H2O2, DMSO, and so on. Water, ACN, DCM, toluene, and acetic acid were mainly used as a solvent. So, to begin with, we chose benzoin as the standard substrate and systematically evaluated the factors like base catalysts, solvent, oxidant, and catalyst loading that affect the oxidation of benzoin.