The Use of Phosphite-Type Ligands in the Ir-Catalyzed Asymmetric Hydrogenation of Heterocyclic Compounds
作者:Sergey E. Lyubimov、Dmitry V. Ozolin、Pavel Yu Ivanov、Artem Melman、Valeriya S. Velezheva、Vadim A. Davankov
DOI:10.1002/chir.22267
日期:2014.1
series of chiral phosphite‐type ligands was tested in asymmetric Ir‐catalyzed hydrogenation of quinolines and 2,4,5,6‐tetrahydro‐1H‐pyrazino(3,2,1‐j,k)carbazole. Hydrogenation of quinaldine hydrochloride provided superior enantioselectivity up to 65% ee compared to quinaldine free base. The ligands were tested for the first time in the asymmetric Ir‐Ircatalyzed hydrogenation of 2,4,5,6‐tetrahydro‐1H‐pyrazino(3