Enantioselective Synthesis of<i>anti</i>-β-Hydroxy-α-Amido Esters by Asymmetric Transfer Hydrogenation in Emulsions
作者:Brinton Seashore-Ludlow、Piret Villo、Peter Somfai
DOI:10.1002/chem.201103739
日期:2012.6.4
two methods for an asymmetric transfer hydrogenation through the dynamic kinetic resolution of α‐amido‐β‐ketoesters. These procedures yield the corresponding anti‐β‐hydroxy‐α‐amido esters in good yields and with good diastereo‐ and enantioselectivities. First, the scope of the reduction of α‐amido‐β‐ketoesters by using triethylammonium formate azeotrope is examined. Then, an emulsion technology with sodium
本文中,我们介绍了两种通过α-氨基-β-酮酸酯的动态动力学拆分进行不对称转移氢化的方法。这些步骤可产生相应的抗-β-羟基-α-酰胺基酯,收率高,具有非对映和对映选择性。首先,研究了使用甲酸三乙铵共沸物还原α-氨基-β-酮酸酯的范围。然后,研究了使用甲酸钠的乳液技术,该技术可扩大底物范围,缩短反应时间并降低催化剂负载量。此外,这些反应操作简单,可以在空气中进行。