Transposition of the phosphinoyl groups in the base-induced rearrangements of N,O-Bis(diarylphosphinoyl)hydroxylamines
作者:Martin J.P. Harger
DOI:10.1016/s0040-4039(97)00915-5
日期:1997.6
Because the N- and O-phosphinoyl groups can change places prior to rearrangement, Ph2P(O)NHOP(O)Ar-2 and Ar2P(O)NHOP(O)Ph-2 (Ar = p-tolyl) both give mixtures of two phosphonamidic-phosphinic anhydrides, Ph(PhNH)P(O)OP(O)Ar-2, and Ar(ArNH)P(O)OP(O)Ph-2, on treatment with KOBut in (BuOH)-O-t. The transposition of the phosphinoyl groups may involve phosphorane intermediates (7 and 9) having the P atom contained within a three-membered ring. (C) 1997 Elsevier Science Ltd.