Solid Electrolyte Interphase (SEI) Triggered Electrochemical Hydrogenation of Nitrobenzene with an Undivided Cell

Le résumé fourni par la source

The hydrogenation of nitrobenzene is a crucial route for obtaining industrially valuable aniline. Various strategies have been developed to accomplish this transformation sustainably and efficiently, in alignment with green chemistry principles. This study explores an electrochemical protocol to obtain the desired aniline in an undivided cell without any heterogeneous catalyst loaded onto the electrodes. The additive, tripyrrolidinophosphine (TPPA), forming a solid electrolyte interphase (SEI), inspired by lithium battery technology, triggers this reaction that would otherwise not occur in a LiBr/THF system. δ-Valerolactam (2-piperidone), a unique hydrogen donor, provides the H atoms and elevates the aniline selectivity to 75.48%. Two reductive pathways are identified in this system, in which aniline is produced from both the direct hydrogenation of phenylhydroxylamine and the indirect hydrolysis of azobenzene. Gram-scale reactions are performed under both batch and flow conditions, demonstrating the practical applicability and viability of this protocol.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.