| 1 | Aerobic Oxidation of 2,3,6-Trimethylphenol with Reusable Homogenized Copper Catalysts显示文摘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(CuCl_(2))and heterogeneous(supported CuO)catalysts.Moreover,CuO@PIM-1 catalyst can be recovered easily and reused at least 5 times without deactivation. | LI Meng WU Mingwei PAN Biwei XU Dandan LVSONG Zhuopu LI Dongqing ZHANG Fangrong HUANG Jun | 2021 | Chemical Research in Chinese Universities2021，37，3： | 0 |
| 2 | Aerobic Oxidation of Alcohols to Aldehydes and Ketones with Recyclable Pd Catalysts on Cross-linked 1,10-Phenanthroline Polymers显示文摘A 1,10-phenanthroline based polymer named PPPhen(i.e.,polymer from pyrene 1,10-phenanthrolin)was prepared by the Friedel-Crafts reaction of 1,10-phenanthroline and pyrene cross-linked with dimethoxymethane.The related Pd catalyst Pd@PPPhen was prepared by supporting Pd nanoparticles(NPs)on the PPPhen material.PPPhen and Pd@PPPhen were characterized by means of scanning electron microscopy(SEM),transmission electron micro-scopy,N2 adsorption-desorption,Fourier-transform infrared and X-ray photoelectron spectroscopy analyses.Theresults showed that PPPhen polymer was highly porous and that the phenanthroline group can enliance the stability of the Pd nanoparticles.Pd@PPPhen also exliibited good catalytic activity in the aerobic oxidation of alcohols to aide-hydes and ketones,and Pd@PPPhen was recyclable with durable activity and retentive stmetures. | LI Ruyue WU Mingwei PAN Biwei LI Meng HUANG Jun | 2020 | Chemical Research in Chinese Universities2020，36，5： | 0 |
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