A class of mono-protected 3-amino-2- hydroxypyridine (MPAHP) ligands that enable the meta- C-H arylation of anilines, phenols, phenylacetic acids, and biologically relevant heterocyclic compounds using norbornene as a transient mediator is disclosed. The applicability of this meta-arylation methodology in the pharmaceutical industry is illustrated for heteroaryl substrates and heteroaryl iodide coupling partners, a feat made possible by using the MPAHP ligand. The enabling nature of MPAHP ligands to achieve other meta-C-H functionalization processes is also illustrated by the development of a meta-C-H amination reaction and a meta-C-H alkynylation reaction.
一种单保护的3-
氨基-2-
羟基吡啶(MPAHP)
配体类别,能够利用去
环戊烯作为瞬时介质,实现
苯胺、
酚、
苯乙酸和
生物相关
杂环化合物的间位C-H芳基化。该间位芳基化方法在制药行业中的适用性通过对杂环底物和杂环
碘化合物的示例进行说明,这一成就得益于使用MPAHP
配体。MPAHP
配体的启用性质还通过开发间位C-H
氨化反应和间位C-H炔基化反应来展示其实现其他间位C-H官能化过程的能力。