关键词: 9-芴甲酸, 二苯乙醇酸, 合成条件

Abstract: In this paper， with benzilic acid as raw materials， 9- fluorenecarboxylic acid was synthesized，The effects of reaction time，reaction temperature，the type and amount of catalyst，solvent type were studied. The product was characterized by IR，HPLC and NMR . The suitable economical and energy efficient synthesis conditions were as follows：the reaction time 2. 5 h，the quality ratio of raw material and solvent with 1∶13，the molar ratio of raw material and catalyst with 1∶3，the reaction temperature was controlled at reflux.

Key words: 9-fluorenecarboxylic acid, benzilic acid, synthesis conditions