A highly efficient and useful method for the synthesis of bis[aryl(diethoxyphosphoryl)methyl]amines
            has been developed. The treatment of aromatic aldehydes with ammonia followed by reaction
            with diethyl phosphite in the presence of acetyl chloride as catalyst gives bis[aryl(diethoxyphosphoryl)methyl]amines.
            This method is easy, rapid, and a high yielding method for the synthesis of bis[aryl(diethoxyphosphoryl)methyl]amines
            with good diastereoselection from simple starting materials.
         
            acetyl chloride - diethyl phosphite - aldehyde - bis[aryl(diethoxyphosphoryl)methyl]amine
               - addition reaction