Synthesis of a molecularly defined single-active site heterogeneous catalyst for selective oxidation of N-heterocycles

Yujing Zhang, Shaofeng Pang, Zhihong Wei, Haijun Jiao, Xingchao Dai, Hongli Wang and Feng Shi ()
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Yujing Zhang: Chinese Academy of Sciences
Shaofeng Pang: Chinese Academy of Sciences
Zhihong Wei: Leibniz-Institut für Katalyse e.V. an der Universität Rostock (LIKAT)
Haijun Jiao: Leibniz-Institut für Katalyse e.V. an der Universität Rostock (LIKAT)
Xingchao Dai: Chinese Academy of Sciences
Hongli Wang: Chinese Academy of Sciences
Feng Shi: Chinese Academy of Sciences

Nature Communications, 2018, vol. 9, issue 1, 1-10

Abstract: Abstract Generally, a homogeneous catalyst exhibits good activity and defined active sites but it is difficult to recycle. Meanwhile, a heterogeneous catalyst can easily be reused but its active site is difficult to reveal. It is interesting to bridge the gap between homogeneous and heterogeneous catalysis via controllable construction of a heterogeneous catalyst containing defined active sites. Here, we report that a molecularly defined, single-active site heterogeneous catalyst has been designed and prepared via the oxidative polymerization of maleimide derivatives. These polymaleimide derivatives can be active catalysts for the selective oxidation of heterocyclic compounds to quinoline and indole via the recycling of –C=O and –C–OH groups, which was confirmed by tracing the reaction with GC-MS using maleimide as the catalyst and by FT-IR analysis with polymaleimide as the catalyst. These results might promote the development of heterogeneous catalysts with molecularly defined single active sites exhibiting a comparable activity to homogeneous catalysts.

Date: 2018
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DOI: 10.1038/s41467-018-03834-4

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