Facile and Convenient Syntheses for Fluorine-Containing Pyrazolo[4,3-c]quinolines, Isoxazoloquinolines, and 1,4-Diazepino[6,5-c]quinolines
作者:Etsuji Okada、Mizuki Hatakenaka、Takushi Sakaemura
DOI:10.3987/com-14-s(k)76
日期:——
N,N-Dimethyl-3-trifluoroacetyl-4-quinolylamine underwent an aromatic nucleophilic N-N exchange reaction with hydrazines followed by cyclocondensation to afford the corresponding novel fluorine-containing 1H- and 2H-pyrazolo[4,3-c]quinolines in good to high yields. This reaction could be extended to the synthesis of novel CF3-containing isoxazoloquinolines using hydroxylamine. Furthermore, the use of 1,2-ethylenediamine and 1,2-phenylenediamines gave the corresponding fluorine-containing 1,4-diazepino[6,5-c]quinoline derivatives in high yields.