Selective Fluorination of 4-Substituted 2-Aminopyridines and Pyridin-2(1<i>H</i>)-ones in Aqueous Solution
作者:Gang Zhou、Yawei Tian、Xiaoming Zhao、Wenyan Dan
DOI:10.1021/acs.orglett.8b02003
日期:2018.8.17
Fluorination of 2-aminopyridines and pyridin-2(1H)-ones in the presence of Selectfluor, water, and chloroform under mild conditions has been realized. This method gives fluorinated pyridines in good to high yields with high regioselectivities. The electron-deficient pyridine system is activated by an amino or hydroxyl group at C2. The regioselectivity of the fluorination reaction is strongly dependent