Synthesis of Chiral Tetrahydro-3-benzazepine Motifs by Iridium-Catalyzed Asymmetric Hydrogenation of Cyclic Ene-carbamates
作者:Bram B. C. Peters、Pher G. Andersson、Somsak Ruchirawat、Winai Ieawsuwan
DOI:10.1021/acs.orglett.2c00362
日期:2022.3.18
preparation of chiral tetrahydro-3-benzazepine motifs by catalytic asymmetric hydrogenation. Substrates bearing both 1-aryl and 1-alkyl substituents were smoothly converted to the corresponding hydrogenated product with excellent enantioselectivity (91–99% ee) and in isolated yield (92–99%). The synthetic value of this transformation was demonstrated by a gram-scale hydrogenation and application in the syntheses
提出了一种高效的 N,P 配体铱配合物,用于通过催化不对称氢化简单制备手性四氢-3-苯并氮杂环基序。带有 1-芳基和 1-烷基取代基的底物被顺利地转化为相应的氢化产物,具有优异的对映选择性(91-99% ee)和分离产率(92-99%)。这种转化的合成价值通过克级氢化和在曲匹泮和非诺多泮的合成中的应用得到证实。