硫酸铈铵催化合成环己酮-1,2-丙二醇缩酮

Catalytic synthesis of cyclohexanone-1,2-propanediol ketal with ammonium ceric sulfate

以硫酸铈铵为催化剂,以环己酮和1,2-丙二醇为原料合成了环己酮-1,2-丙二醇缩酮,通过正交实验优选反应条件,研究了反应物料配比、催化剂用量、反应时间等因素对反应的影响。结果表明,在n(环己酮)∶n(1,2-丙二醇)=1∶1.5,催化剂用量为反应物料总质量的1.4%,带水剂环己烷12mL,反应时间60min的优化条件下,环己酮-1,2-丙二醇缩酮的收率可达65.9%。

Cyelohexanone-l,2-propanediol ketal was synthesized from cyclohexanone and 1,2-propanediol in the presence of ammonium ceric sulfate. The factors influencing the synthesis were discussed and the best condi- tions were found out. The optimum conditions are： molar ratio of cyclohexanone to 1,2-propanediol is 1 ： 1.5, the quantity of catalyst is equal to 1.4% of feed stocks, the volume of cyclohexane as the water-carrying agent is 12 mL and the reaction time is 60 min. Ammonium eerie sulfate is an excellent catalyst for synthesizing cyclohex- anone-1,2-propanediol ketal with yield of 65.9%.