Photo‐Mediated Reduction of Carbon Dioxide to Formic and Other Carboxylic Acids by Ni‐Catalysis with Chelating Ligand. Issue 33 (1st September 2022)

• Record Type: Journal Article
• Authors: Das, Anjan; Mondal, Moumita
• Is Part Of: ChemistrySelect. Volume 7:Issue 33(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-09-01
• Subjects: Carbon dioxide -- Carboxylation -- Formic acid -- Nickel -- Photoredox; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202201930
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: With ever increasing demand of carbon capture and utilization (CCU), conversion of CO2 to fuel and fine chemicals by light mediated process has become a topic of outmost importance. Several catalytic systems have been developed to overcome the thermodynamic and kinetic barrier of conversion of abundant and sustainable carbon feed stock CO2 to value added chemicals such as CO, HCOOH, CH3 OH, carboxylic acids and others. Ni is often found in center of such catalytic systems for photo mediated conversion of CO2, giving good yield and selectivity. Reduction of CO2 to CO is most common while discussing such catalytic systems encompassing Ni. But insertion of CO2 into Ni−H/Ni−C bond leading to formic or other carboxylic acids has established its own importance in green chemistry. Formic acid is a prospective green fuel as well as it is an important starting material for many industries. Similarly carboxylic acids and derivatives are widely used in the manufacture of pharmaceutical, pesticide, dye, and other fine chemicals. Alternative green synthesis of these chemicals via photo‐mediated nickel catalysis using CO2 is highly desirable. Several energetically accessible oxidation states of nickel promote single electron transfer (SET) with help of chelating ligands, which are the key steps for this process to occur. This review will focus on photo assisted conversion of CO2 to formic and other carboxylic acids by nickel catalysis with chelating ligand. Abstract : In this minireview, photo‐mediated reductions of CO2 to formic and other carboxylic acids by Ni‐chelate catalysts were discussed with mechanistic details. Formic and other carboxylic acid products are formed exclusively over CO by insertion of CO2 in Ni−H/Ni−C bonds in these Ni‐catalysed light‐mediated CO2 reductions. Role of chelating ligands in modulating the catalytic efficiency and product selectivity of such catalysis has also been encompassed in the minireview.