6-fluoro-1,4-dihydro-8-methyl-4-oxo-1-(2,2,2-trifluoroethyl)-3-quinolinecarboxylic acid, ethyl ester 在
水 作用下,
以
盐酸 为溶剂,
反应 1.5h,
以to give 36.4 g of 6-fluoro-1,4-dihydro-8-methyl-4-oxo-1-(2,2,2-trifluoroethyl)-3-quinolinecarboxylic acid, m.p. 221°-223°的产率得到6-fluoro-1,4-dihydro-8-methyl-4-oxo-1-(2,2,2-trifluoroethyl)-3-quinolinecarboxylic acid