Solvolysis of 1-oxo-2,8-diphenyl-2,5,8-triaza-1λ⁵-phosphabicyclo[3.3.0]octane: new rearrangement of an eight- to a five-membered phosphodiamidate system

Abstract

The alcoholysis of the title compound with RO^–/ROH gives the 1,3,2-diazaphospholidine derivative via the cleavage of the P–N(2) bond, while under acidic catalysis the P–N(5) bond is broken leading to the eight-membered monocyclic product, which can isomerize via a new type of rearrangement to the former five-membered system.

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