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
Pirlindole is an antidepressantdrug. It acts principally as reversible inhibitor of monoamine oxidase-A (RIMA) and appears relatively potent in comparison with reference drugs. Pirlindole possesses stereogenic center but is generally used as racemate. In this work, the firstpreparativeresolution of its enantiomeric couple is described. Whereas selective crystallization of salts of chiral acid failed