Reactions of the Benzil-Triethyl Phosphite Adduct

Abstract
The decomposition of benzil-triethyl phosphite adduct in the presence of copper powder or cupric sulfate has been studied. When benzil, triethyl phosphite and cupric sulfate were treated in boiling toluene. cis-dibenzoylstilbene and triethyl phosphate were obtained. When the reaction was carried out in the presence of active hydrogen compounds, such as alcohol, carboxylic acid and amine, the corresponding benzoin derivatives were obtained. Further, when the adduct was decomposed in the presence of phenyl isocyanate or dicyclohexylcarbodiimide, 3, 4, 5-triphenyl-4-oxazoline-2-one or 2-cyclohexylimino-3-cyclohexyl-4, 5-diphenyl-4-oxazoline was obtained, along with triethyl phosphate.