Preparation of beta-ketoesters useful in preparing quinolone ant

Details Preparation of beta-ketoesters useful in preparing quinolone ant Preparation of beta-ketoesters useful in preparing quinolone ant

1992-01-24

1995-01-10

Dentz, Bernard

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

560 51, C07C 6714, C07D21355

Patent

active

053808606

ABSTRACT:
A method for preparing a compound of the formula ##STR1## wherein Q is C--H or N; R.sup.1 is C.sub.1-C.sub.4 alkyl, benzyl or p-nitrobenzyl and X and Y are independently selected from fluoro and chloro comprising reacting a compound of the formula ##STR2## wherein Q is >C--H or N; X and Y are independently selected from fluoro and chloro; and Z is fluoro, chloro, 1-imidazolyl or substituted 1-imidazolyl, wherein the 1-imidazolyl group is substituted with one or two substituents independently selected from C.sub.1 to C.sub.4 alkyl, with a compound of the formula

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