期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 24, 页码 13310-13316出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202011164
关键词
hydroxylation of benzene; polyoxovanadates; quinolinium; supramolecular photocatalysis; synergistic catalysis
资金
- National Natural Science Foundation of China [21971134, 21631007, 21225103]
- Doctoral Fund of Ministry of Education of China [20130002110042]
- Tsinghua University Initiative Foundation Research Program [20131089204]
- State Key Laboratory of Natural and Biomimetic Drugs [K20160202]
A series of supramolecular catalysts based on alkoxohexavanadate anions and quinolinium ions were demonstrated for the photocatalytic hydroxylation of benzene to phenol with competitive good yield, high selectivity and high atom availability.
Direct Hydroxylation of benzene to phenol with high yield and selectivity has been the goal of phenol industrial production. Photocatalysis can serve as a competitive method to realize the hydroxylation of benzene to phenol owing to its cost-effective and environmental friendliness, however it is still a forbidding challenge to obtain good yield, high selectivity and high atom availability meanwhile. Here we show a series of supramolecular catalysts based on alkoxohexavanadate anions and quinolinium ions for the photocatalytic hydroxylation of benzene to phenol under UV irradiation. We demonstrate that polyoxoalkoxovanadates can serve as efficient catalysts which can not only stabilize quinolinium radicals but also reuse H(2)O(2)produced by quinolinium ions under light irradiation to obtain excellent synergistic effect, including competitive good yield (50.1 %), high selectivity (>99 %) and high atom availability.
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