Polyphosphate Ester as a Synthetic Agent. VII. The Beckmann Rearrangement and Formation of Amidines with PPE

Abstract

Polyphosphate ester (PPE) was shown to be a good reagent for the Beckmann rearrangement of some ketoximes, whereas dehydration took place in the case of benzaldoximes. When some ketoximes were heated with PPE, N, N'-diphenylamidines (IVa, b) were formed as a result of a sequence of condensation reactions.