Diphenyl α-aminomethylphosphonates are prepared in good yields using a Lewis acid
catalyzed Birum-Oleksyszyn reaction. This approach enlarges the scope of this reaction,
allowing the use of aldehydes and ketones and the use of acid-labile groups in the
synthesis of mono-and disubstituted diphenyl 1-aminoalkylphosphonates.
diphenyl 1-aminoalkylphosphonates - carbamates - Lewis acid - aldehydes - ketones