An unprecedented C2‐alkylation of quinoline N‐oxide derivatives via C−C bond activation of tert‐ and sec‐alkyl alcohol is described using hypervalent iodine (III) reagent PhI(OAc)₂ (PIDA). This regioselective alkylation using mild hypervalent iodine reagents is more practical, operationally simple and transition metal free. The reaction proceeds efficiently with a broad range of substrates including quinoline, isoquinoline, and pyridine N‐oxides using a variety of tert‐/sec‐ alcohols. From experimental outcome, we also propose a rationalized mechanism, mediated by PIDA.

中文翻译：

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通过叔烷基/仲醇的氧化烷基转移和C-C键裂解实现喹啉N-氧化物的无过渡金属区域选择性烷基化

喹啉N-氧化物衍生物的前所未有的C2烷基化通过C-C键活化的叔和仲烷基醇是使用高价碘（III）试剂岛（OAC）描述₂（PIDA）。使用温和的高价碘试剂进行的区域选择性烷基化反应更加实用，操作简单且不含过渡金属。使用多种叔/秒醇，反应可在多种底物（包括喹啉，异喹啉和吡啶N-氧化物）上有效地进行。从实验结果来看，我们还提出了一种由PIDA调解的合理化机制。