硫酸高铈催化合成丁酮1,2-丙二醇缩酮

Catalytic synthesis of butanone 1,2-propanediol ketal with cerium sulfate

以硫酸高铈为催化剂,通过丁酮与1,2-丙二醇反应合成了丁酮1,2-丙二醇缩酮。较系统地研究了酮醇量比、催化剂用量、带水剂用量及反应时间等条件对收率的影响。结果表明:在n(丁酮):n(1,2-丙二醇)=1:1.5,催化剂用量为反应物料总质量的1.6%,带水剂环己烷用量为25mL,反应时间75min的优化条件下,丁酮1,2-丙二醇缩酮的收率可达82.7%。

Butanone 1,2-propanediol ketal was synthesized from butanone and 1,2-propanediol using cerium sulfate as catalyst.The factors influencing the synthesis were investigated.The optimum conditions were as follows： n（butanone）：n（l,2-propanediol） is 1：1.5,w（catalyst） is 1.6%,and the reaction time is 75min.Cerium sulfate is an excellent catalyst for synthesizing butanone 1,2-propanediol ketal and the product yield can reach over 82.7%.