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P-Stereogenic pincer iridium complexes: Synthesis, structural characterization and application in asymmetric hydrogenation
被引:23
作者:
Yang, Zehua
[1
]
Wei, Xuan
[1
]
Liu, Delong
[1
]
Liu, Yangang
[1
]
Sugiya, Masashi
[3
]
Imamoto, Tsuneo
[3
,4
]
Zhang, Wanbin
[1
,2
]
机构:
[1] Shanghai Jiao Tong Univ, Sch Pharm, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China
[3] Nippon Chem Ind Co Ltd, Organ R&D Dept, Koto Ku, Tokyo 1368515, Japan
[4] Chiba Univ, Grad Sch Sci, Dept Chem, Inage Ku, Chiba 2638522, Japan
基金:
中国国家自然科学基金;
关键词:
P-Stereogenic phosphine ligand;
Pincer iridium complex;
Asymmetric hydrogenation;
CHIRAL PHOSPHINE-LIGANDS;
EFFICIENT HYDROGENATION;
CARBON-DIOXIDE;
PYBOX;
DIARYLPHOSPHINES;
TRANSFORMATION;
REACTIVITY;
REDUCTION;
ALKYNES;
ENONES;
D O I:
10.1016/j.jorganchem.2015.05.002
中图分类号:
O61 [无机化学];
学科分类号:
070301 ;
081704 ;
摘要:
P-Stereogenic PNP type pincer iridium complexes (PNPIrH2Cl)-Ir-tBuMe (3) and (PNPIrH3)-Ir-tBuMe (4) were synthesized in reasonable yields and characterized by H-1 NMR, C-13 NMR, P-31 NMR, HRMS and/or single crystal X-ray diffraction. The ORTEP diagram shows that the coordination geometry around the iridium center of complex 3 is approximately octahedral. The chlorinated iridium complex (3) and/or the trihydride iridium complex (4) were used as catalysts in the asymmetric hydrogenation of ketones, olefins and quinoline to provide the desired products with up to 17% enantioselectivity. (C) 2015 Elsevier B.V. All rights reserved.
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页码:41 / 45
页数:5
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