Benzoylacetic acid ester derivatives and process for their preparations
AssigneeKyorin Pharmaceutical Co., Ltd.
InventorsTsutomu Irikura, Seigo Suzue, Satoshi Murayama, Keiji Hirai, Takayoshi Ishizaki
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Abstract
The present invention is concerned with certain novel benzoylacetic acid ester derivatives (I) which are useful as a intermediates for synthesis of antibacterial agests. ##STR1## wherein R is a lower alkyl group, X is a halogen atom and Y is a chlorine or bromine atom.
Claims5
Benzoylacetic acid ester derivatives of the formula (I), ##STR5## wherein R is a lower alkyl group, X is a halogen atom and Y is a chlorine or bromine atom.
The benzoylacetic acid ester which is diethyl 2-(2,3-dichloro-4,5-difluorobenzoyl) malonate.
The benzoylacetic acid ester which is diethyl 2-(3-bromo-2-chloro-4,5-difluorobenzoyl) malonate.
Dependencies are inferred from the claim text.