Diastereo- and Enantioselective Synthesis of Structurally Diverse Succinate, Butyrolactone, and Trifluoromethyl Derivatives by Iridium-Catalyzed Hydrogenation of Tetrasubstituted Olefins
作者:Sutthichat Kerdphon、Sudipta Ponra、Jianping Yang、Haibo Wu、Lars Eriksson、Pher G. Andersson
DOI:10.1021/acscatal.9b01508
日期:2019.7.5
A highly efficient iridium N,P-ligand-catalyzed asymmetric hydrogenation of functionalized tetrasubstituted olefins lacking a directing group has been developed. Various structural diverse chiral succinate derivatives were obtained in high yields and excellent enantio- and diastereoselectivities (up to 99% ee) using 0.5–1.0 mol % catalyst loadings. This stereoselective reaction is applicable for the
已经开发了一种高效的铱N,P-配体催化的不带导向基团的官能化四取代烯烃的不对称氢化反应。使用0.5–1.0 mol%的催化剂负载量,可以获得高收率,出色的对映异构和非对映异构选择性(高达99%ee)的各种结构多样的手性琥珀酸酯衍生物。该立体选择性反应适用于合成具有两个连续的立体发生中心的手性无环分子(至多> 99%ee),并且与各种芳族,脂族和杂环系统以及具有不同电子性质的各种官能团兼容。此外,这种不对称方案允许短距离的对映选择性途径生成丁内酯,这是抗癌药BMS-871和药物合成的中间体(2S)-(-)-维拉帕米和(2 S)-(-)-加洛帕米。