期刊
CHEMICAL SCIENCE
卷 14, 期 43, 页码 12339-12344出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d3sc02515b
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N-alkylation of anilines using alcohols is an efficient strategy to synthesize various secondary amines. Metal-organic framework-derived CoNx@NC catalysts were reported for selective N-alkylation reactions, showing high yield and recyclability due to the importance of Co-N coordination.
N-alkylation of anilines by alcohols can be used as an efficient strategy to synthesise a wide range of secondary amines. In this respect, a hydrogen borrowing methodology has been explored using precious metal-based catalysts. However, the utilisation of cheap and readily available transition metal based catalysts is required for large-scale applications. In this work, we have reported metal-organic framework-derived CoNx@NC catalysts for the selective N-alkylation of anilines with different types of alcohols. The Co-N coordination in CoNx@NC was found to be extremely important to improve the conversion efficiency and yield of the product. As a result, CoNx@NC produced 99% yield of the desired amines, which is far better than that of Co@C (yield = 65%). In addition, CoNx@NC showed remarkable recyclability for six cycles with a minimum drop in the yield of the desired product.
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