Compounds of the structure ##STR1## wherein R is alkyl with 1-3 carbon atoms, 2-fluoroethyl, phenyl or cyclopropyl, X is halogen, and X.sup.1 and X.sup.2 each independently is hydrogen or halogen. The compounds are useful as intermediates for quinoline antibacterial compounds.
结构式为##STR1##的化合物,其中R是1-3个碳原子的烷基,2-
氟乙基,苯基或环丙基,X是卤素,X.sup.1和X.sup.2各自独立地是氢或卤素。这些化合物可用作
喹诺酮抗菌化合物的中间体。