作者:Lapa, Daiene P.、Araújo, Leticia H. S.、Melo, Sávio R.、Costa, Paulo R. R.、Caleffi, Guilherme S.
DOI:10.3390/molecules29143420
日期:——
The (R,R)-Teth-TsDPEN-Ru(II) complex promoted the one-pot double C=O reduction of α-alkyl-β-ketoaldehydes through asymmetric transfer hydrogenation/dynamic kinetic resolution (ATH-DKR) under mild conditions. In this process, ten anti-2-benzyl-1-phenylpropane-1,3-diols (85:15 to 92:8 dr) were obtained in good yields (41–87%) and excellent enantioselectivities (>99% ee for all compounds). Notably, the
(R,R)-Teth-TsDPEN-Ru(II)配合物在温和条件下通过不对称转移氢化/动态动力学拆分(ATH-DKR)促进α-烷基-β-酮醛的一锅双C=O还原。在此过程中,以良好的产率(41-87%)和优异的对映选择性(> 99% ee,所有化合物)。值得注意的是,醛部分的优先还原导致原位形成2-苄基-3-羟基-1-苯基丙-1-酮中间体。这些中间体在通过氢键增强反应活性和立体选择性方面发挥了至关重要的作用。