REACTIONS OF CARBENE INTERMEDIATES FROM THE REACTION OF TRIALKYL PHOSPHITES WITH DIALKYL BENZOYLPHOSPHONATES - PREPARATION AND REACTIONS OFDIMETHYL 2-(N-TERT-BUTYL-N-METHYLAMINO)BENZOYLPHOSPHONATE AND DIMETHYL 2-(METHYLAMINO)BENZOYLPHOSPHONATE
Dv. Griffiths et al., REACTIONS OF CARBENE INTERMEDIATES FROM THE REACTION OF TRIALKYL PHOSPHITES WITH DIALKYL BENZOYLPHOSPHONATES - PREPARATION AND REACTIONS OFDIMETHYL 2-(N-TERT-BUTYL-N-METHYLAMINO)BENZOYLPHOSPHONATE AND DIMETHYL 2-(METHYLAMINO)BENZOYLPHOSPHONATE, Journal of the Chemical Society. Perkin transactions. I, (17), 1997, pp. 2545-2548
Dimethyl 2-(methylamino)benzoylphosphonate has been prepared by the th
ermal decomposition of dimethyl 2-(N-tert-butyl-N-methylamino)benzoylp
hosphonate formed by the action of triethylamine on imethoxyphosphinyl
)-1-methyl-2,1-benzisoxazolinium hexafluorophosphate, The reactions of
both benzoylphosphonates with trimethyl phosphite proceed via carbene
intermediates 4 to initially give ylidic phosphonates 5, which for 5(
X = 2-MeNH) undergoes cyclisation and rearrangement to give the novel
2-oxophosphorindoline 11.dagger