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.