Catalytic synthesis of ethyl acetoacetate 1,2-Propanediol ketal with H_3PW_(12)O_(40)/PAn
Yang Shui-jin
Abstract
Yang Shui-jin
Abstract
Ethyl acetoacetate 1,2-propanediol ketal was synthesized from ethyl acetoacetate and 1,2-propylene glycol in the presence of H_3PW_(12)O_(40)/PAn.The factors influencing the synthesis were discussed and the optimum conditions were found out.The optimum conditions are:molar ratio of ethyl acetoacetate to 1,2-propylene glycol was 1∶1.5,the quantity of catalyst was equal to 1.0% of feed stocks,and the reaction time was 50 min.H_3PW_(12)O_(40)/PAn was an excellent catalyst for synthesizing ethyl acetoacetate 1,2-propanediol ketal and its yield can reach over 85.0%.
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Ethyl acetoacetate 1,2-propanediol ketal was synthesized from ethyl acetoacetate and 1,2-propylene glycol in the presence of H_3PW_(12)O_(40)/PAn.The factors influencing the synthesis were discussed and the optimum conditions were found out.The optimum conditions are:molar ratio of ethyl acetoacetate to 1,2-propylene glycol was 1∶1.5,the quantity of catalyst was equal to 1.0% of feed stocks,and the reaction time was 50 min.H_3PW_(12)O_(40)/PAn was an excellent catalyst for synthesizing ethyl acetoacetate 1,2-propanediol ketal and its yield can reach over 85.0%.
Key concepts: Ethyl acetoacetate, Propanediol, Catalysis, Yield (engineering), Chemistry, Molar ratio, 1,3-Propanediol, Organic chemistry