Highly Enantioselective Iridium-Catalyzed Hydrogenation of Conjugated Trisubstituted Enones
作者:Bram B. C. Peters、Jira Jongcharoenkamol、Suppachai Krajangsri、Pher G. Andersson
DOI:10.1021/acs.orglett.0c04012
日期:2021.1.1
Asymmetric hydrogenation of conjugated enones is one of the most efficient and straightforward methods to prepare optically active ketones. In this study, chiral bidentate Ir–N,P complexes were utilized to access these scaffolds for ketones bearing the stereogenic center at both the α- and β-positions. Excellent enantiomeric excesses, of up to 99%, were obtained, accompanied with good to high isolated
共轭烯酮的不对称氢化是制备光学活性酮的最有效,最直接的方法之一。在这项研究中,手性双齿Ir-N,P络合物被用于进入这些支架,以获得在α和β位置均具有立体中心的酮。获得了高达99%的出色的对映体过量,并具有良好或较高的分离产率。具有挑战性的二烷基取代的底物(很难通过令人满意的手性诱导进行氢化)以高度对映选择性的方式氢化。