Unusual solvent-dependent behaviour of hydroxyiminophosphonamidates in the Beckmann reactions: choice between rearrangement or fragmentation to metaphosphonamidate species
Unusual solvent-dependent behaviour of hydroxyiminophosphonamidates in the Beckmann reactions: choice between rearrangement or fragmentation to metaphosphonamidate species
作者:Jan Kehler、Eli Breuer
DOI:10.1039/a704787h
日期:——
Methyl α-hydroxyiminobenzyl-N-tert-butylphosphonamidate
undergoes Beckmann rearrangement (BR) when heated in toluene, but
fragmentation (via metaphosphonamidate) to a phosphoramidate and
PhCN when heated in BuOH, supporting the assumption of a common
intermediate for the BR and the Beckmann fragmentation; polar solvents
retard the rearrangement.