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Zn( ii )@TFP-DAQ COF: an efficient mesoporous catalyst for the synthesis of N -methylated amine and carbamate through chemical fixation of CO 2
Selective N -methylation and carbamate formation reactions were demonstrated via the chemical incorporation of CO 2 using a Zn-loaded TFP-DAQ COF (covalent organic framework) as an active catalyst under mild reaction conditions. The selective N -methylation and N -formylation reactions were performe...
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Published in: | New journal of chemistry 2020-01, Vol.44 (3), p.744-752 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Selective N -methylation and carbamate formation reactions were demonstrated via the chemical incorporation of CO 2 using a Zn-loaded TFP-DAQ COF (covalent organic framework) as an active catalyst under mild reaction conditions. The selective N -methylation and N -formylation reactions were performed by simply varying the type of solvent. The Zn( ii )@TFP-DAQ COF catalyst was characterized via different characterization techniques such as PXRD, FTIR, UV-vis, N 2 adsorption–desorption studies, FESEM and TEM. The catalyst material showed pores in the mesoporous region with a high surface area of 1117.375 m 2 g −1 . The as-synthesized material was applied as a cheap catalyst for the N -methylation of secondary amines and in carbamate formation reactions with high yields of the desired products up to 98.5% and 97%, respectively, with >99% selectivity. The catalyst was found to be completely heterogeneous and reusable for multiple reaction cycles. |
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ISSN: | 1144-0546 1369-9261 |
DOI: | 10.1039/C9NJ04673A |