METHOD FOR PRODUCING QUINOLONECARBOXYLIC ACID ESTER AND 1,8-NAPHTHYLIDINECARBOXYLIC ACID ESTER

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a quinolonecarboxylic acid ester and a 1,8-naphthylidinecarboxylic acid ester in good total yield without requiring a complex operation. SOLUTION: This method for producing the quinolonecarboxylic acid ester and the 1,8-naphthylidinecarboxylic acid ester comprises continuously carrying out the steps represented by the formula in the same reaction vessel without isolating the intermediates.