A highly efficient method of epoxidation of olefins with hydrogen peroxide catalyzed by changeable hexadentate 8-quinolinolato manganese(III) complexes
A highly efficient method of epoxidation of olefins with hydrogen peroxide catalyzed by changeable hexadentate 8-quinolinolato manganese(III) complexes
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DOI：
10.1016/j.jcat.2008.02.023
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发表时间：
2008-05
影响因子：
7.3
通讯作者：
S. Zhong;Yueming Tan;Z. Fu;Q. Xie;Fangyun Xie;Xiaoping Zhou;Z. Ye;Guosheng Peng;D. Yin
中科院分区：
文献类型：
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作者：
S. Zhong;Yueming Tan;Z. Fu;Q. Xie;Fangyun Xie;Xiaoping Zhou;Z. Ye;Guosheng Peng;D. Yin
提出并方便地合成了新型六齿结合的 8-羟基喹啉锰 (III) 配合物，用于以乙酸铵和乙酸为添加剂，在水-丙酮介质中用过氧化氢水进行烯烃的环氧化。研究发现，所提出的催化剂的催化效率明显优于传统的四齿 salen-MnIIICl，因为它们具有特殊的六齿结合结构，可以通过在反应介质中打开轴向 MnO 键，轻松转化为相应的带有侧羟基的五齿，如紫外可见光谱、原位循环伏安法和 石英晶体微天平表征。
Novel hexadentate binding 8-quinolinolato manganese(III) complexes were proposed and conveniently synthesized for the epoxidation of olefins with aqueous hydrogen peroxide in water–acetone media with ammonium acetate and acetic acid as additives. The catalytic efficiencies of the suggested catalysts were found to be obviously superior to the traditional tetradentate salen–MnIIICl, due to their special hexadentate binding structures that could be easily converted to the corresponding pentadentate with pendant hydroxyl groups by opening an axial MnO bond in the reaction media, as supported by UV–vis spectra, in situ cyclic voltammetry, and quartz crystal microbalance characterizations.