期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 27, 期 58, 页码 14390-14395出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202102239
关键词
amine; covalent organic framework; imine; metal free; porphyrin
资金
- National Key Research and Development Program of China [2017YFA0204800]
- National Natural Science Foundation of China [22002070]
- Natural Science Foundation of Shandong Province [ZR2020QB059]
- Fundamental Research Funds of Shangdong University [2019GN108]
This study presents a novel two-dimensional porphyrin-based covalent organic framework (Por-BC-COF) that can serve as a metal-free heterogeneous photocatalyst for the oxidation of amines to imines with a high yield of 97%. The framework exhibits excellent crystallinity, high surface area, wide light absorption range, and good stability in various organic solvents.
Imines are important intermediates in drug synthesis. Photocatalytic aerobic oxidative coupling of amines has been considered as a clean and promising way to produce imines and has attracted great attention. Herein, we designed and synthesized a novel two-dimensional porphyrin-based covalent organic framework (Por-BC-COF) which adopts an AA stacking mode with excellent crystallinity, high Brunauer-Emmett-Teller surface areas (1200 m(2) g(-1)), wide light absorption range (200-1300 nm) and good stability in a variety of organic solvents. Por-BC-COF can be used as a metal-free heterogeneous photocatalyst for the photocatalytic oxidation of amines to imines under visible light and red light with a high yield (97 %). This work presents a novel and efficient COF photocatalyst in the application of light-driven organic synthesis.
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