N-Arylurethane neighboring group participation during solvolysis of 3-methoxy-17-N-phenylcarbamoyloxy-16-p-tolylsulfonyloxymethylestra-1, 3,5(10)-triene stereoisomers

Article abstract of DOI:10.1016/S0040-4020(01)85620-9

During alkaline methanolysis of the four stereoisomers 1-4 of 3-methoxy-17-N-phenylcarbamoyloxy-16-p-tolylsulfonyloxymethylestra-1, 3,5(10)-triene, a clycization taken place, in the course of which the N-phenyl-tetrahydrooxazin-2-one derivatives 5-8 are f