Sodium in liquid ammonia—a versatile tool in modifications of arylphosphine oxides
作者:Marek Stankevič、Adam Włodarczyk、Magdalena Jaklińska、Renata Parcheta、K. Michał Pietrusiewicz
DOI:10.1016/j.tet.2011.09.045
日期:2011.11
modifications of tertiary arylphosphine oxides based on their reaction with sodium in liquid ammonia is presented. Depending on the structure of the starting compounds, either dearomatisation of the phenyl substituent or cleavage of a P-aryl bond from phosphorus atom can be selectively performed and the corresponding (1,4-cyclohexadien-3-yl)phosphine oxides or secondary phosphine oxides were obtained
Michael-Type Addition of Secondary Phosphine Oxides to (1,4-Cyclohexadien-3-yl)phosphine Oxides
作者:Marek Stankevič、Magdalena Jaklińska、K. Michał Pietrusiewicz
DOI:10.1021/jo300026f
日期:2012.2.17
Base-induced reaction between (1,4-cyclohexadien-3-yl)phosphine oxides and secondaryphosphine oxides gives 3,4-bis(phosphinoyl)cyclohexenes and 2,3-bis(phosphinoyl)cyclohexenes through an in situ isomerization of one of the cyclohexadienyl double bonds and a subsequent Michael-type addition of the secondaryphosphine oxide.