Stereochemical control (E/Z and syn/anti) by the diphenylphosphinoyl group in the synthesis of allylic alcohols by allylic rearrangement and by 1,4-diastereoselective reduction of enones
作者:Jonathan Clayden、Eric W. Collington、Jason Elliott、Stephen J. Martin、Andrew B. McElroy、Stuart Warren、David Waterson
DOI:10.1039/p19930001849
日期:——
Allylic rearrangement of substitued 2-hydroxyalk-3-en-1-yl(diphenyl)phosphine oxides to 4-hydroxyalk-2-en-1-yl(diphenyl)phosphine oxides can be performed with total regio- and reasonable stereochemical control. Alternatively, the reduction of substituted 4-diphenylphosphinoylbut-2-en-1 -ones shows remarkable 1,4-diastereoselectivity. All these reactions are directed by the diphenylphosphinoyl (Ph2PO)
取代的2-羟基烷-3-烯-1-基(二苯基)膦氧化物的烯丙基重排为4-羟基烷-2-烯-1-基(二苯基)膦氧化物可以在完全区域和合理的立体化学控制下进行。或者,取代的4-二苯基膦酰基丁-2-烯-1-酮的还原显示出显着的1,4-非对映选择性。所有这些反应均由二苯基膦酰基(Ph 2 PO)基团指导。