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Isoalloxazines are the essential cofactors of flavoproteins, which are responsible for the different redox reactions in various biological processes. They can be efficiently synthesized using N-substituted 2-nitrophenylamines as a precursor. In the present communication, we report a simple and efficient method for the synthesis of N-substituted 2-nitrophenylamines in DABCO-based ionic liquids. The method offers the use of DABCO-based ionic liquids as non-conventional catalysts, which eliminates the use of any additional base with excellent yields in short reaction time, easy product isolation, high purity, and recyclability.
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