Asymmetric Hydrogenation of α-Alkyl-Substituted β-Keto Esters and Amides through Dynamic Kinetic Resolution
作者:Taiga Yurino、Ryo Nishihara、Toshihisa Yasuda、Shuangli Yang、Noriyuki Utsumi、Takeaki Katayama、Noriyoshi Arai、Takeshi Ohkuma
DOI:10.1021/acs.orglett.3c04036
日期:2024.4.12
Asymmetric hydrogenation of α-alkyl-substituted β-keto esters and amides with the DIPSkewphos/3-AMIQ–Ru(II) catalyst system through dynamic kinetic resolution was examined. A series of β-keto esters and amides with a simple or functionalized α-alkyl group were applicable to this reaction, affording the α-substituted β-hydroxy esters and amides in ≥99% ee (anti/syn ≥ 99:1) in many cases. The 5 g scale
采用 DIPSkewphos/3-AMIQ-Ru(II) 催化剂体系通过动态动力学拆分对 α-烷基取代的 β-酮酯和酰胺进行不对称氢化。一系列带有简单或官能化α-烷基的β-酮酯和酰胺适用于该反应,得到≥99% ee(反/顺≥ 99:1)的α-取代的β-羟基酯和酰胺。很多情况。 5克规模的反应很容易实现。提出了过渡态模型中的对映体和非对映体选择模式。