5-Chloro-7-iodo-8-quinolinolatomanganese(III) with the Feature of pH-Regulated Molecular Switches as a Highly Efficient Catalyst for Epoxidation of Olefins with Hydrogen Peroxide

Authors

  • Sheng Zhong,

    1. Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410081, People's Republic of China, Fax: (+86)-731–8872531
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  • Zaihui Fu,

    1. Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410081, People's Republic of China, Fax: (+86)-731–8872531
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  • Yueming Tan,

    1. Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410081, People's Republic of China, Fax: (+86)-731–8872531
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  • Qingji Xie,

    1. Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410081, People's Republic of China, Fax: (+86)-731–8872531
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  • Fang Xie,

    1. Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410081, People's Republic of China, Fax: (+86)-731–8872531
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  • Xiaoping Zhou,

    1. Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410081, People's Republic of China, Fax: (+86)-731–8872531
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  • Zhengpei Ye,

    1. Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410081, People's Republic of China, Fax: (+86)-731–8872531
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  • Guosheng Peng,

    1. Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410081, People's Republic of China, Fax: (+86)-731–8872531
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  • Dulin Yin

    1. Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410081, People's Republic of China, Fax: (+86)-731–8872531
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Abstract

A simple 5-chloro-7-iodo-8-quinolinolato-manganese(III) complex with the feature of pH-regulated molecular switches was conveniently synthesized and found to be a novel and highly efficient catalyst for the epoxidation of olefins with aqueous hydrogen peroxide in water-acetone media containing ammonium acetate and acetic acid as additives. This should be due to its special hexadentate binding structure that could be easily converted to the corresponding pentadentate form with a pendant hydroxy group via the opening of an axial Mn[BOND]O bond in the reaction media, as supported by in situ cyclic voltammetry and UV-vis spectra characterization.

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