作者:Huang Wei-Yuan、Liu Yan-Song、Lu Long
DOI:10.1016/s0022-1139(00)83977-9
日期:1994.2
A convenient new route to 2-(F-alkyl)-4-hydroxyquinolines has been developed. In the presence of triethylamine, treatment of ethyl 2,2-dihydropolyfluoroalkanoates with aromatic amines in acetonitrile at 70 °C led to a mixture of the corresponding enamines and imines, which was cyclized in polyphosphoric acid (PPA) at 170 °C to give 2-(F-alkyl)-4-hydroxyquinolines in good yield.
已经开发了一种方便的2-(F-烷基)-4-羟基喹啉的新途径。在三乙胺存在下,在70°C的乙腈中用芳香胺处理2,2-二氢多氟链烷酸乙酯,得到相应的烯胺和亚胺的混合物,将其在170°C的多磷酸(PPA)中环化,得到2 -(F-烷基)-4-羟基喹啉具有良好的收率。