Volume 51, Issue 40 pp. 10181-10184
Communication

Iridium-Catalyzed Asymmetric Hydrogenation of Pyridinium Salts

Zhi-Shi Ye

Zhi-Shi Ye

State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), 457 Zhongshan Road, Dalian 116023 (China) http://www.lac.dicp.ac.cn/

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Mu-Wang Chen

Mu-Wang Chen

State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), 457 Zhongshan Road, Dalian 116023 (China) http://www.lac.dicp.ac.cn/

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Qing-An Chen

Qing-An Chen

State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), 457 Zhongshan Road, Dalian 116023 (China) http://www.lac.dicp.ac.cn/

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Lei Shi

Lei Shi

State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), 457 Zhongshan Road, Dalian 116023 (China) http://www.lac.dicp.ac.cn/

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Ying Duan

Ying Duan

State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), 457 Zhongshan Road, Dalian 116023 (China) http://www.lac.dicp.ac.cn/

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Prof. Yong-Gui Zhou

Corresponding Author

Prof. Yong-Gui Zhou

State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), 457 Zhongshan Road, Dalian 116023 (China) http://www.lac.dicp.ac.cn/

State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), 457 Zhongshan Road, Dalian 116023 (China) http://www.lac.dicp.ac.cn/Search for more papers by this author
First published: 11 September 2012
Citations: 142

Financial support was provided by the National Natural Science Foundation of China (21032003, 20921092 and 21125208) and the National Basic Research Program of China (2010CB833300).

Graphical Abstract

Highly efficient iridium-catalyzed asymmetric hydrogenations of simple 2-substituted pyridinium salts gives the chiral 2-substituted piperidines with up to 93 % ee (see picture; cod=1,5-cyclooctadiene; synphos=(5,6),(5′,6′)-bis(ethylenedioxy)-2,2′-bis(diphenylphosphino)-1,1′-biphenyl). The key feature of this strategy is the activation of simple pyridines as the pyridinium salts, thus eliminating substrate inhibition and enhancing the reactivity.

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