作者:Shi, Qiu、Huang, Xiaofeng、Yang, Ruizhi、Liu, Wenbo H.
DOI:10.1039/d4sc03739a
日期:——
regioselectivity. By identifying an enzyme-mimic pocket-type urea activation reagent, we report a general platform for pyridine C-4 functionalization. Both ionic and radical nucleophiles can be incorporated to achieve the alkylation and arylation. Notably, the highly regioselective C-4 radical arylation is disclosed for the first time. The broad scope of nucleophiles and pyridines renders this platform applicable
吡啶的 C-H 官能化是获取药物、农用化学品和材料中吡啶衍生物的有效策略。通过离子和自由基物质对吡啶鎓进行亲核加成已被证明特别有用。然而,这些反应的区域选择性较差。通过鉴定一种酶模拟口袋型尿素活化试剂,我们报告了吡啶 C-4 功能化的通用平台。可以掺入离子和自由基亲核试剂以实现烷基化和芳基化。值得注意的是,首次公开了高度区域选择性的C-4自由基芳基化。广泛的亲核试剂和吡啶使该平台适用于类药物分子的后期功能化和复杂的生物学重要分子的制备。