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Asymmetric Hydrosilylation of Aromatic Ketones Catalyzed by an Economical and Effective Copper-Diphosphine Catalytic System in Air
被引:8
|作者:
Liang, Minting
[1
]
Xia, Xiaofeng
[1
]
Liu, Xiang
[1
]
Li, Hexing
[2
]
机构:
[1] Jiangnan Univ, Sch Chem & Mat Engn, Minist Educ, Key Lab Food Colloids & Biotechnol, Wuxi 214122, Jiangsu, Peoples R China
[2] Shanghai Normal Univ, Chinese Minist Educ Resource Chem, Key Lab, Shanghai 200234, Peoples R China
基金:
中国国家自然科学基金;
关键词:
asymmetric catalysis;
hydrosilylation;
ketones;
copper salt;
polymethylhydrosiloxane;
EFFICIENT ENANTIOSELECTIVE HYDROSILYLATION;
CONJUGATE REDUCTION;
COPPER(II)-DIPYRIDYLPHOSPHINE CATALYST;
SELECTIVE HYDROSILYLATION;
HETEROARYL KETONES;
COMPLEXES;
LIGANDS;
ARYL;
HYDROGENATION;
RHODIUM;
D O I:
10.1002/cjoc.201500072
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
In the presence of the inexpensive and non-toxic polymethylhydrosiloxane, the combination of copper(II) acetate and a chiral diphosphine displayed high catalytic efficiency in the asymmetric hydrosilylation of a series of aromatic ketones in air atmosphere and at room temperature. (R)-1-Arylethanols were obtained with up to 99% yield and 93% enantiomeric excess. Meanwhile, the electron effect and steric hindrance of substituents on the aromatic ring had an interesting influence on both the yields and enantioselectivities. Furthermore, a possible mechanism was presented to explain the influence of some key factors on the reaction.
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页码:578 / 582
页数:5
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