Fructone- A and Fructone- B was synthesized from ethyl acetoacetate and ethanediot or 1,2- propanediol using ammonium ceric sulfate as catalyst , The factors influencing the synthesis were discussed and best optimum conditions were found out, The molar ratio of ethyl acetoacetate to alcohol was 1 ; 1.65,the amount of catalyst was （0. 8-1. 0）g/0.1mol ethyl acetoacetate,the reaction time was 3h. Ammonium ceric sulfate is a good catalyst for synthesizing fructone-A and fructone-B,the yield can reach up to 94.0% and 92.1%.
Chinese Rare Earths