Intermolecular functionalization of C(sp³)–H bonds and aliphatic carboxylic acids enables the efficient synthesis of high value-added organic compounds from readily available starting materials. Although methods involving hydrogen atom transfer have been developed for such functionalization, these methods either work for only activated C(sp³)–H bonds or bring in a narrow set of functional groups. Here we describe a Cu-catalyzed process for the diverse functionalization of both unactivated C(sp³)–H bonds and aliphatic carboxylic acids. The process is enabled by the trapping of alkyl radicals generated through hydrogen atom abstraction by arylsulfonyl-based SOMO-philes, which introduces a large array of C, N, S, Se, and halide-based functional groups. The chemoselectivity can be switched from C–H functionalization to decarboxylative functionalization by matching the bond dissociation energy of the hydrogen atom transfer reagent with that of the target C–H or O–H bond.

中文翻译：

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铜催化未活化 C(sp3)-H 键和脂肪族羧酸的分子间官能化

C(sp ³ )–H 键和脂肪族羧酸的分子间官能化能够从容易获得的起始材料中有效合成高附加值的有机化合物。尽管已经为这种官能化开发了涉及氢原子转移的方法，但这些方法要么仅适用于活化的 C(sp ³ )-H 键，要么引入一组狭窄的官能团。在这里，我们描述了一种 Cu 催化的过程，用于两种未活化的 C(sp ³)–H 键和脂肪族羧酸。该过程是通过基于芳基磺酰基的 SOMO-philes 捕获通过氢原子提取产生的烷基自由基实现的，它引入了大量的 C、N、S、Se 和基于卤化物的官能团。通过将氢原子转移试剂的键解离能与目标 C-H 或 O-H 键的键解离能相匹配，可以将化学选择性从 C-H 官能化转变为脱羧官能化。