New electrochemical method converts CO2 and nitrite into high-value arylglycines
Researchers have developed a two-step electrochemical process to synthesize arylglycines, a class of valuable unnatural amino acids, using carbon dioxide, nitrite, and aromatic aldehydes as feedstocks. The method replaces traditional toxic reagents and harsh conditions with a Lewis acid-assisted electrocatalytic approach. Using benzaldehyde as a model substrate, the process achieved 84% conversion and 81% Faradaic efficiency for phenylglycine. The technique involves the electrochemical reduction of nitrite to hydroxylamine, which condenses with aldehydes to form oximes, followed by electroreductive carboxylation with CO2. This approach offers a sustainable alternative for producing compounds essential in medicinal chemistry and peptide natural products.
