The condensation of 2-aminoacetophenone with (RCO2Et)-C-F (R-F = CF3, CF2H, CF2CF2H) in the presence of LiH in THF or (BuOK)-O-t in (BuOH)-O-t affords either 2-polyfluoroalkyl-4-quinolones or 1-(2-polyfluoroacylaminophenyl)-3-polyfluoroalkylpropane-1,3-diones, depending on the ratio of the initial reactants. The latter are hydrolyzed in an acidic medium to produce 2-polyfluoroalkyl-4-quinolones. N-Methyl-2-trifluoromethyl-4-quinolone was synthesized from 2-aminoacetophenone, CF3CO2Et, and MeI in the presence of (BuOK)-O-t.
The condensation of 2-aminoacetophenone with (RCO2Et)-C-F (R-F = CF3, CF2H, CF2CF2H) in the presence of LiH in THF or (BuOK)-O-t in (BuOH)-O-t affords either 2-polyfluoroalkyl-4-quinolones or 1-(2-polyfluoroacylaminophenyl)-3-polyfluoroalkylpropane-1,3-diones, depending on the ratio of the initial reactants. The latter are hydrolyzed in an acidic medium to produce 2-polyfluoroalkyl-4-quinolones. N-Methyl-2-trifluoromethyl-4-quinolone was synthesized from 2-aminoacetophenone, CF3CO2Et, and MeI in the presence of (BuOK)-O-t.