Novel N-substituted phosphoramidic chlorides and acids have been prepared and their ir spectra are discussed. Pyrophosphoryl chloride has been used for the phosphorylation of amines. Treatment of NN′-diphenylphosphorodiamidic chloride with silver oxide gives NN′ N ″N‴-tetraphenylpyrophosphoramide, and not NN′-diphenylphosphenimidic amide as previously suggested. Some reactions of NN′-diarylphosphorodiamidic ...
