Publication date: 10th November 2021
Nitriles are interesting class of organic compounds included in a wide variety of natural products and industrial processes. Typical routes to prepare nitriles proceed with low atom economy, require toxic require toxic reagents, and/or have limited selectivity. An alternative procedure for primary amine oxidation is to use organic electrosynthesis. Organic electrosynthesis can help in replacement of dangerous and toxics chemicals, reduced levels of solvents used in conventional methods, applying only current. One of the main aims in electrosynthesis is the achievement of stable and robust electrodes. In our group we have developed porous Ti/Ni alloys as electrodes for the oxygen evolution reaction (OER) and observed low overpotential and high-density currents.[1] This Ti/Ni is prepared in a facile and scalable method based on powder metallurgy with a high electrochemical surface area and a high concentration of active species. Here we explore the use of Ti/Ni electrodes for the oxidation of amines to nitriles.[2]Furthermore, the proposed method using our electrodes helps improving some aspects like: the electro-oxidation of primary amines (-CH2-NH2) are thermodynamically more favorable than OER and helps for enhancing hydrogen evolution reaction (HER) and the nitrile products are hydrophobic and can easily separate from aqueous electrolyte/electrode interface.
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