Iridium-Catalyzed Asymmetric Hydrogenation of (2H-chromen-3-yl)methanols

Chinese Journal of Catalysis ›› 2007, Vol. 28 ›› Issue (10): 847-849.

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Iridium-Catalyzed Asymmetric Hydrogenation of (2H-chromen-3-yl)methanols

LIU Qibin, ZHOU Yonggui*

Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, Liaoning, China

Received:2007-10-25 Online:2007-10-25 Published:2011-10-28

Abstract

Abstract: Trans-cyclohexane-backbone iridium complexes with different axial chirality were synthesized from (1R,2S)-2-(pyridin-2-yl)cyclohexanol, and their application in asymmetric hydrogenation of (2H-chromen-3-yl)methanols was investigated. When the hydrogenation was carried out using 1% Ir-8 as the catalyst at a hydrogen pressure of5 MPain dichloromethane for16 hat room temperature, excellent activities and up to 94% ee were obtained.

Key words: (2H-chromen-3-yl)methanol, asymmetric hydrogenation, iridium catalyst

LIU Qibin;ZHOU Yonggui*. Iridium-Catalyzed Asymmetric Hydrogenation of (2H-chromen-3-yl)methanols[J]. Chinese Journal of Catalysis, 2007, 28(10): 847-849.

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Iridium-Catalyzed Asymmetric Hydrogenation of (2H-chromen-3-yl)methanols

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