Asymmetric Reduction of Electron-Rich Ketones with Tethered Ru(II)/TsDPEN Catalysts Using Formic Acid/Triethylamine or Aqueous Sodium Formate
作者:Rina Soni、Thomas H. Hall、Benjamin P. Mitchell、Matthew R. Owen、Martin Wills
DOI:10.1021/acs.joc.5b00990
日期:2015.7.2
The asymmetric transfer hydrogenation (ATH) of ketones under aqueous conditions using tethered Ru(II)/η6-arene/diamine catalysts is described, as is the ATH of electron-rich substrates containing amine and methoxy groups on the aromatic rings. Although such substrates are traditionally challenging ones for ATH, the tethered catalysts work very efficiently. In the case of amino-substituted ketones,
使用系留的Ru(II)水性条件/η下酮的不对称转移氢化(ATH)6 -arene /二胺的催化剂被描述,如为含有芳环胺和甲氧基富电子基板的ATH。尽管此类底物在传统上是ATH面临的挑战,但束缚催化剂的工作效率却很高。对于氨基取代的酮,在水性条件下可获得优异的结果。但是,对于甲氧基取代的底物,更完善的甲酸/三乙胺体系可提供更好的结果。