group (DG) strategy developed for the functionalization of unactivated primary β C−H bonds of aliphatic amines. Conveniently synthesized from protected primary amines, the hydrazone DGs are shown to site‐selectively promote the β‐acetoxylation and tosyloxylation via five‐membered exo‐palladacycles. Amines with a wide scope of skeletons and functional groups are tolerated. Moreover, the hydrazone DG
描述了一种新的基于based的外向基团(DG)策略,该策略用于脂族胺的未活化伯C-H键的功能化。protected DGs可以方便地从受保护的
伯胺合成,并通过五元的exo - palladacycles选择性地促进β-乙酰氧基化和
甲苯磺酰化。可以耐受具有广泛骨架和官能团的胺。此外,DG可以很容易地去除,并且还发现了一个一锅的CH乙酰氧基化/ DG去除方案。