Metallation of sensitive fluoroarenes using a potassium TMP-zincate supported by a silyl(bis)amido ligand
作者:Pasquale Mastropierro、Alan R. Kennedy、Eva Hevia
DOI:10.1039/d2cc00979j
日期:——
Combining a bulky bis(amide) and a reactive one-coordinate TMP (2,2,6,6-tetramethylpiperidide) ligand, a new mixed K/Zn heteroleptic base has been developed for regioselective zincation of fluoroarenes. This special ligand set allows for trapping and structural authentication of the first intermediates of direct Zn–H exchange of fluoroarenes obtained via deprotonative metallation, providing mechanistic
结合庞大的双(酰胺)和反应性单配位 TMP(2,2,6,6-四甲基哌啶)配体,开发了一种新的混合 K/Zn 杂配碱基,用于氟芳烃的区域选择性锌化。这种特殊的配体组允许对通过去质子金属化获得的氟芳烃直接 Zn-H 交换的第一个中间体进行捕获和结构鉴定,从而提供有关过程的机理见解。