Asymmetric hydrosilylation of nitrones using ruthenium(II) phosphine complex catalysts; syntheses of optically active N,N-disubstituted hydroxylamines and secondary amines
作者:Shun-Ichi Murahashi、Shoji Watanabe、Tatsuki Shiota
DOI:10.1039/c39940000725
日期:——
Enantioselective hydrosilylation of carbon–nitrogen double bonds of nitrones with diphenylsilane using Ru2Cl4-[(S)-(–)-p-tolbinap]2(NEt3)[p-tolbinap = 2,2′-bis(di-p-tolyphosphino)-1,1′-binaphthyl] catalyst at 0°C gives the corresponding optically active N,N-disubstituted hydroxylamines; up to 91% enantiomeric excess (e.e.) is achieved.
使用 Ru2Cl4-[(S)-(-)-p-tolbinap]2(NEt3)[p-tolbinap = 2,2′-双(二对多膦基)-1,1′-联萘]催化剂在 0°C 下对硝基化合物的碳氮双键进行对映选择性氢硅烷化反应,得到相应的光学活性 N,N-二取代羟胺;对映体过量(e.e.)。