Proline potassium salt: a superior catalyst to synthesize 4-trifluoromethyl quinoline derivatives via Friedlander annulation
作者:Xiao Long Du、Biao Jiang、Yuan Chao Li
DOI:10.1016/j.tet.2013.06.017
日期:2013.9
Proline potassium salt was successfully firstly used to catalyze the Friedlander annulation toward the synthesis of 4-trifluoromethyl-substituted quinolines from the substituted 2-trifluoroacetyl anilines and variety carbonyl compounds under mild conditions in good to excellent yields. This catalyst provides several advantages, such as shorter reaction time, high regioselectivity, functional group