Interaction of quinolines polyfluorinated on the benzene moiety with sodium and potassium amides in liquid ammonia
作者:Larisa Yu. Gurskaya、Galina A. Selivanova、Vitalij D. Shteingarts
DOI:10.1016/j.jfluchem.2012.01.007
日期:2012.4
The interaction of 5,6,7,8-tetrafluoro- (1) and 5,7,8-trifluoro-6-(trifluoromethyl)quinoline (2) with sodium or potassium amide in liquid ammonia proceeds as a nucleophile (NH2−) addition on the 2-position of the pyridine ring, the respective adducts being oxidized to give the respective quinoline-2-amines. In the case of 1 the amide addition is concurrent with aminodefluorination on the 6- and 7-positions
的5,6,7,8-四氟(相互作用1)和5,7,8-三氟-6-(三氟甲基)喹啉(2)用在液氨中进行作为亲核钠或氨基钾(NH 2 -)在吡啶环的2-位上加成,相应的加合物被氧化,得到相应的喹啉-2-胺。在1的情况下,酰胺的添加与6-和7-位的氨基脱氟同时进行。具有一个酰胺当量的5,6,8-(3),5,7,8-三氟喹啉(4)和5,7-二氟喹啉(5)经过两个邻位邻侧的C H键去质子化-氟原子以产生各自的长寿命喹啉基阴离子,其可以用作亲核合成子,例如其甲基化以产生各自的6-和7-甲基聚氟喹啉。当酰胺钾过量时,最初产生的喹啉基阴离子在2-或4-位上添加酰胺阴离子。