Proceedings of Materials for Sustainable Development Conference (MAT-SUS) (NFM22)
DOI: https://doi.org/10.29363/nanoge.nfm.2022.110
Publication date: 11th July 2022
Amines are compounds very sensitive to oxidation, and a wide array of products may be generated depending on the oxidant.1 A particularly challenging oxidation is the conversion of a primary amine to a nitrile. In this work, the electrochemistry of primary amines to nitriles is explored using porous Ti/Ni alloys electrodes. These electrodes were recently developed in our group and proved very active in the water splitting oxidation achieving very low overpotentials.2 Here, the electrodes have been used for the oxidation of amines to nitriles. A selection of primary amines have been evaluated to understand formation of secondary reactions that reduced their yield. For example, attachment of the amines to the electrodes and degradation in the reaction media has been reported frequently.3 Several conditions were screened to reduce these secondary reactions such as the use of solvents and their mixtures or modification of pH. Under optimized conditions quantitative conversions and high yields are obtained in the electrochemical reaction of primary amines to nitriles.4
We thank Generalitat Valenciana for financial support under Programa PROMETEU program (PROMETEO/2020/028).
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