Synthesis of Ethyl Acetoacetate Ethylene Ketal Catalyzed by using TiSiW_(12)O_(40)/TiO_2

Ethyl acetoacetate ethylene ketal was synthesized from ethyl acetoacetate and glycol in the presence of TiSiW12O40/TiO2. The factors influencing the synthesis were discussed and the best conditions were found out. The optimum conditions are that molar ratio of ethyl acetoacetate to glycol was 1∶1.5, the quantity of catalyst adding was equal to 1.0% feed stock, and the reaction time was 50 min. TiSiW12O40/TiO2 was an excellent catalyst for synthetizing ethyl acetoacetate ethylene ketal, the yield can reach over 84.1%.