Intermediates for preparing 1,4-dihydro-4-oxo-...

Details Intermediates for preparing 1,4-dihydro-4-oxo-... Intermediates for preparing 1,4-dihydro-4-oxo-...

C - Chemistry, Metallurgy

07

C

260/284, 260/579

C07C 49/807 (2006.01) C07C 45/46 (2006.01) C07C 55/02 (2006.01) C07C 63/70 (2006.01) C07C 205/12 (2006.01) C07C 205/58 (2006.01) C07C 229/34 (2006.01) C07C 229/56 (2006.01) C07C 245/20 (2006.01) C07C 259/14 (2006.01) C07D 215/56 (2006.01)

Patent

CA 1331185

INTERMEDIATES FOR PREPARING 1,4-DIHYDRO-4-OXO-QUINOLINE-3- CARBOXYLIC ACID ESTERS Abstract Compounds of the formula: Image IV wherein Y is OR1, fluoro, chloro, methyl, - ? - ? - OR2, Image , or Image ; Image ; 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.

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