Synthesis of Chiral 2‐Oxazolidinones by Ruthenium‐Catalyzed Asymmetric Transfer Hydrogenation of 2‐Oxazolones
作者:Pinke Yu、Danyi Chen、Yiwen Liu、Congcong Yin、Qixing Liu、Haifeng Zhou
DOI:10.1002/adsc.202301186
日期:2024.3.8
An asymmetric transfer hydrogenation of 2-oxazolones in the presence of a chiral diamine ruthenium catalyst with potassium formate as a hydrogen source and potassium carbonate as an additive in 2,2,2-trifluoroethanol is described. A series of chiral 2-oxazolidinones were obtained with 29%–95% yields and 86%–>99% ee's. Furthermore, gram-scale synthesis of chiral 2-oxazolidinone and its downstream derivatizations
描述了在手性二胺钌催化剂存在下,以甲酸钾作为氢源,碳酸钾作为添加剂,在2,2,2-三氟乙醇中进行2-恶唑酮的不对称转移氢化。获得了一系列手性2-恶唑烷酮,产率29%–95%,ee 86%–>99%。此外,手性2-恶唑烷酮的克级合成及其下游衍生化证明了该方法的实用性。