Journal of the Chemical Society. Chemical communications p. 1319 - 1320 (1995)
Update date:2022-08-11
Topics:
Jackson, Andrew
Meth-Cohn, Otto
A simple protocol for the synthesis of quinolone antibiotics is exemplified for the synthesis of norfloxacin; 3-chloro-4-fluoroaniline with triethyl orthoformate is transformed into its N-ethyl-N-formyl derivative which reacts with methyl malonyl morpholide and phosphoryl chloride at 100 deg C to give 6-fluoro-7-chloro-1-ethylquinol-4-one-3-carboxylic acid, which has previously been converted into norfloxacin by the action of piperazine.
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