ACID, ESTER, ETHER AND AMINO ACID-SUBSTITUTED HALOPHENYL DERIVATIVES USEFUL AS INTERMEDIATES IN THE PREPARATION OF QUINOLINE-3-CARBOXYLIC ACID ESTERS; PREPARATORY PROCESSES

摘要

Compounds of the formula: CHEM wherein Y is OR1, fluoro, chloro, methyl, CHEM R1, and R3 are independently selected from hydrogen and C1-C4 alkyl, R2 is C1-C4 alkyl and X is fluoro, chloro or bromo, with the proviso that when Y is OH, X cannot be bromo and with the proviso that X can be fluoro only if R2 is methyl.