作者:Nataša Mršić、Thomas Jerphagnon、Adriaan J. Minnaard、Ben L. Feringa、Johannes G. de Vries
DOI:10.1002/adsc.200900522
日期:2009.11
from the (cyclooctadiene)iridium chloride dimer, [Ir(COD)Cl]2, and the monodentate phosphoramidite ligand (S)-PipPhos was used in the enantioselective hydrogenation of 2- and 2,6-substituted quinoxalines. In the presence of piperidine hydrochloride as additive full conversions and enantioselectivities of up to 96% are obtained.
由(环辛二烯)氯化铱二聚物[Ir(COD)Cl] 2和单齿亚磷酰胺配体(S)-PipPhos原位制备的催化剂用于2-和2,6-取代的喹喔啉的对映选择性氢化。在存在哌啶盐酸盐作为添加剂的情况下,可获得高达96%的全转化率和对映选择性。