Abstract This paper discloses an efficient one-pot protocol to convert easily accessible 3-nitropyridines to 3-acetamidopyridin-2-yl 4-methylbenzenesulfonate derivatives which are core structures of many pharmaceutical molecules. The strategy successfully combined a three-step reaction in one pot via progressively adding different reactants at rt. The reaction displays good functional group tolerance and regioselectivity. Structurally diversified 3-nitropyridine could be time-efficiently (3.5 h) derivatized to various functional 2-O,3-N-pyridines which are apt for further elaborations. The transformation was amenable to gram-scale synthesis.

中文翻译：

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衍生化硝基吡啶的简便一锅法：获得 3-Acetamidopyridin-2-yl 4-methylbenzosulfonate 衍生物

摘要 本文公开了一种有效的一锅法，可将易于获得的 3-硝基吡啶转化为 3-乙酰氨基吡啶-2-基 4-甲基苯磺酸衍生物，这是许多药物分子的核心结构。该策略通过在室温下逐步添加不同的反应物，成功地将三步反应合二为一。该反应显示出良好的官能团耐受性和区域选择性。结构多样化的 3-硝基吡啶可以高效地（3.5 小时）衍生为各种功能性 2-O,3-N-吡啶，适合进一步阐述。该转化适用于克级合成。