Abstract
An efficient and direct C(sp3)-H functionalization of 2-methyl azaarenes with persistent nitroxide radical 4-substituted-2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO) under neutral conditions has been developed. A broad of 2-methylazaarenes could be reacted with 4-substituted TEMPOs to afford corresponding azaarene 2-methoxylamines by using cheaper copper (II) acetate hydrate as oxidant.
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