Abstract
The oxidation of 2,3,6-trimethylphenol(TMP) can produce both 2,3,5-trimethyl-1,4-benzoquinone(TMQ) and 2,3,5-trimethyl-1,4-hydroquinone(TMHQ) as important intermediates of vitamin E. With a soluble and porous polymer of intrinsic microporosity(PIM-1), we developed a highly active and reusable CuO@PIM-1 catalyst for the aerobic oxidation of TMP to TMQ and TMHQ. The CuO@PIM-1 catalyst is high active and selective for the aerobic oxidation of TMP, and TMQ and TMHQ can be obtained in yields of 81% and 19%, respectively. The CuO@PIM-1 catalyst has both advantages of homogeneous and heterogeneous and the CuO@PIM-1 catalyst showed a higher activity than homogeneous(CuCl2) and heterogeneous(supported CuO) catalysts. Moreover, CuO@PIM-1 catalyst can be recovered easily and reused at least 5 times without deactivation.
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This work was supported by the National Natural Science Foundation of China(No.21676140).
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Li, M., Wu, M., Pan, B. et al. Aerobic Oxidation of 2,3,6-Trimethylphenol with Reusable Homogenized Copper Catalysts. Chem. Res. Chin. Univ. 37, 751–756 (2021). https://doi.org/10.1007/s40242-021-0025-x
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DOI: https://doi.org/10.1007/s40242-021-0025-x