Progress and challenges in dicarboxylation with CO<sub>2</sub>

Carboxylic Acid Salts as Dual‐Function Reagents for Carboxylation and Carbon Isotope Labeling

“…10 i). [25] Other substrates underwent carboxylation, for example p-toluidine gave carbamate 10 k, fluorene gave acetate 10 l and 2-(phenylethynyl)phenol gave benzofuran 10 m via cyclization. Previously, p-toluidine was unreactive under copper catalyzed conditions [26] and the formation of benzofuran 10 m required pressurized CO 2 (10 atm).…”

Electroreductive Dicarboxylation of Unactivated Skipped Dienes with CO2

“…[2] In the last decades, it has emerged as an increasingly viable platform to synthesize a variety of valueadded carboxylic acids. [3] Notably, direct dicarboxylation of alkenes to generate dicarboxylic acids, [4] which are widely used as versatile chemical frameworks in materials science and biomedical applications (Figure 1), [5] is particularly attractive in this field. In addition to 1,2-dicarboxylation of styrenes and other activated alkenes with CO 2 to give succinic acids, [6] selective 1,4-dicarboxylation of 1,3-dienes has also been of great interest to produce valuable adipic acid derivatives.…”

Recent advances in the electrochemically mediated chemical transformation of carbon dioxide

“…Transition metal-catalyzed, 5 photoredox 6 and electro-catalytic carboxylations 7 have been proved to be effective and robust methods to synthesize a variety of functionalized carboxylic acids and their derivatives. However, transition metal-catalyzed carboxylation often requires stoichiometric reductants such as Mn/Zn to promote the catalytic cycle, while photocatalysis requires expensive photosensitizers.…”