| Autor: |
Sood, Parul, Bhatt, Sakshi, Bagdwal, Harshita, Joshi, Arti, Singh, Ashi, Jain, Suman L., Monika Singh |
| Zdroj: |
Journal of Materials Chemistry A; 8/14/2024, Vol. 12 Issue 30, p19168-19175, 8p |
| Abstrakt: |
Polyoxometalates (POMs) possess unique redox properties, making them effective catalysts for various chemical transformations. Typically, in the N-formylation reaction, POMs can facilitate the conversion of CO2 and amines into formamide derivatives by activating the CO2 molecule and promoting its reaction with the amine substrate. POMs, exhibiting photocatalytic activity, can initiate and accelerate chemical reactions under light irradiation. This property is particularly beneficial in the context of CO2 utilization. The combination of catalytic activity, photocatalytic properties, structural diversity and redox activity makes them promising candidates for catalysing the N-formylation of amines using CO2. Herein, we present two novel Keggin cluster based solids, (C5H7N2)5[CoW12O40] (PS-96) and (C5H7N2)5[CuW12O40] (PS-97), of which PS-97 was active for efficient and photocatalytic N-formylation of various substituted anilines and morpholine with CO2 using phenyl silane as a reducing agent, under ambient conditions. Out of the array of amines tested, p-toluidine demonstrated the best conversion and yield of 83% and 96%, respectively. PS-97 exhibited robust recyclability, maintaining catalytic activity across 5 successive cycles without notable degradation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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