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
脯氨酸钾盐首先成功地用于催化弗里德兰德环化反应,在温和的条件下以良好或优异的收率由取代的2-三氟乙酰基苯胺和各种羰基化合物合成4-三氟甲基取代的喹啉。该催化剂具有许多优点,例如反应时间短,区域选择性高,官能团耐受性强和底物范围广。