Reusable Ionic Liquid‐Catalyzed Oxidative Coupling of Azoles and Benzylic Compounds via sp3 C—N Bond Formation under Metal‐Free Conditions.
2015
The heterocyclic ionic liquid-catalyzed direct oxidative amination of benzylic sp3 C–H bonds via intermolecular sp3 C–N bond formation for the synthesis of N-alkylated azoles under metal-free conditions is reported for the first time. The catalyst 1-butylpyridinium iodide can be recycled and reused with similar efficacies for at least eight cycles.
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