Improved Syntheses of Phosphine Ligands by Direct Coupling of Diarylbromophosphine with Organometallic Reagents
作者:Lei Liu、Hai-Chen Wu、Jin-Quan Yu
DOI:10.1002/chem.201101467
日期:2011.9.19
crucial for their direct coupling with binaphthylmagnesium bromide or BINOL triflate. This finding has led to an improved preparation of both electron‐deficient BINAP‐type phosphineligands and several important Buchwald'sligands.
Stereospecific Deoxygenation of Phosphine Oxides with Retention of Configuration Using Triphenylphosphine or Triethyl Phosphite as an Oxygen Acceptor
作者:Hai-Chen Wu、Jin-Quan Yu、Jonathan B. Spencer
DOI:10.1021/ol048227c
日期:2004.12.1
[reaction: see text] A new protocol for deoxygenation of various phosphine oxides with retention of configuration is described. The advantage of the new method includes milder conditions and considerably shortened reaction times. Mechanistic studies about the oxygen transfer between the starting phosphine oxide and the sacrificial triphenylphosphine are also presented.