Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 14, Issue 13, Pages 15287-15297Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c01091
Keywords
covalent triazine frameworks (CTFs); heteroatoms; metal-free catalysis; chemoselective; reduction reaction; green catalysis
Funding
- Ghent University BOF [01D04318]
- Research Foundation Flanders (FWO-Vlaanderen) [G000117N]
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A robust nanoporous covalent triazine framework has been developed as a metal-free catalyst for the green chemoselective reduction of nitroarenes.
Chemoselective reduction of nitroarenes to arylamines is a core technology for the synthesis of numerous chemicals. The technology, however, relies on applying precious noble metal catalysts. We present our findings on the development of robust nanoporous covalent triazine frameworks (CTFs) as metal-free catalysts for the green chemoselective reduction of nitroarenes. The turnover frequency is found to be 43.03 h(-1), exceeding activities of the heteroatom-doped carbon nanomaterials by a factor of 30. The X-ray photoelectron spectroscopy and control experiments provide further insights into the nature of active species for prompt catalysis. This report confirms the importance of quaternary 'N' and 'F' atom functionalities to create active hydrogen species via charge delocalization as a critical step in improving the catalytic activity.
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