Phosphorus-Nitrogen Diad Prototropic Tautomerism of Phosphonous Bis(1-methylbenzylamides)

摘要

In the previous paper we reported that phosphorous tris (alkylamides) exist as PH-iminophosphoranes [1]. Proceeding with these studies, we found that phosphonous bis [(S)-1-methylbenzylamides] Ia-Id also exist in a tautomeric equilibrium with aminoiminophosphoranes IIa-IId. Considering the important theoretical value of the diad prototropic equilibria, we have studied the tautomerism of compounds Ia-Id.