Enantioselective Hydrogenation of Olefins with Iridium-Phosphanodihydrooxazole Catalysts
作者:Andrew Lightfoot、Patrick Schnider、Andreas Pfaltz
DOI:10.1002/(sici)1521-3773(19981102)37:20<2897::aid-anie2897>3.0.co;2-8
日期:1998.11.2
hydrogenation of unfunctionalized aryl-substituted olefins with iridium-phosphanyldihydrooxazole complexes 1 (see reaction scheme). The anion of the complex-for example, hexafluorophosphate or tetrakis[3,5-bis(trifluoromethyl)phenyl]borate (BARF- )-has a remarkable effect on the reactivity and longevity of the catalyst.
在未官能化的芳基取代的烯烃与铱-膦酰基二氢恶唑配合物1的催化加氢中,获得了较高的周转率和高达98%的ee(参见反应方案)。络合物的阴离子,例如六氟磷酸根或四[3,5-双(三氟甲基)苯基]硼酸根(BARF -)-对催化剂的反应性和寿命有显着影响。