Issue 22, 2024

Highly effective solar CO2 fixation via photocatalytic carboxylation of aromatic amines with carbon dioxide over a covalent organic framework (COF) as a photocatalyst

Abstract

Carbon dioxide (CO2) is an attractive building block in terms of abundance and sustainability. However, the low reactivity of CO2 limits its application in organic reactions as frequently high-energy reagents are needed to drive organic transformation. Here, we report the efficient carboxylation of aromatic amines with CO2 in the presence of a covalent organic framework (COF) as a photocatalyst in combination with a nickel(II) complex as a co-catalyst under solar light irradiation. This solar-light photo-catalyzed strategy provides a facile method to produce a series of valuable carboxylic acids. Moreover, this versatile protocol shows an inexpensive photocatalyst, mild reaction conditions, and good functional group tolerance without the necessity of using stoichiometric metallic reductants. Moderate to good yields of the desired carboxylic acids were obtained in a substrate scope. This method opens new opportunities for the carboxylation of aromatic amines with CO2.

Graphical abstract: Highly effective solar CO2 fixation via photocatalytic carboxylation of aromatic amines with carbon dioxide over a covalent organic framework (COF) as a photocatalyst

Supplementary files

Article information

Article type
Paper
Submitted
01 Aug 2024
Accepted
29 Sep 2024
First published
04 Oct 2024

Catal. Sci. Technol., 2024,14, 6670-6677

Highly effective solar CO2 fixation via photocatalytic carboxylation of aromatic amines with carbon dioxide over a covalent organic framework (COF) as a photocatalyst

C. Singh, J. Y. Kim, N. Park, R. K. Yadav and J. Baeg, Catal. Sci. Technol., 2024, 14, 6670 DOI: 10.1039/D4CY00949E

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