Organophosphorus compounds XVI. Synthesis of some novel 2,3-dihydro-1H-1,2-benzazaphosphole 2-oxides and -sulphides
作者:David J. Collins、Peter F. Drygala、John M. Swan
DOI:10.1016/s0040-4039(00)87037-9
日期:1982.1
Several derivatives of 2,3-dihydro-1H-1,2-benzazaphosphole, a new class of benz-fused NP heterocycle, have been synthesised by thermal and DCC-promoted NP ring closure from zwitterionic intermediates.
通过两性离子中间体通过热和DCC促进的NP闭环合成了2,3-二氢-1 H -1,2-苯并氮杂唑的几种衍生物,这是一类新型的苯并稠合的NP杂环。
COLLINS, D. J.;DRYGALA, P. F.;SWAN, J. M., AUSTRAL. J. CHEM., 1983, 36, N 12, 2517-2536
作者:COLLINS, D. J.、DRYGALA, P. F.、SWAN, J. M.
DOI:——
日期:——
Synthesis of <i>P</i>-Substituted 5- and 6-Membered Benzo-Phostams: 2,3-Dihydro-1<i>H</i>-1,2-benzazaphosphole 2-Oxides and 2,3-Tetrahydro-1<i>H</i>-1,2-benzazaphosphinine 2-Oxides
Several approaches were developed for the preparation of phosphorus-substituted 5- and 6-membered benzophostams. Carbodiimide-promoted cyclization of zwitterionic aminophosphinates derived from a nitrobenzene precursor accomplished the cyclization in good yields. Alternatively, a novel copper-catalyzed cross-coupling between a phosphonamide and a bromobenzene precursor produced the heterocycles in