碘掺杂聚苯胺催化合成丁醛乙二醇缩醛

SYNTHESIS OF BUTYRALDEHYDE GLYCOL ACETAL CATALYZED BY I_2/PAn

制备了碘掺杂聚苯胺催化剂,采用正交实验探讨了合成丁醛乙二醇缩醛的影响因素。结果表明,在n (丁醛)：n(乙二醇)=1：1．5,催化剂的用量为反应物料总质量的0．60%,带水剂环己烷的用量为8 mL,反应时间为1．0 h条件下,丁醛乙二醇缩醛的收率可达71．6%。

A novel catalyst, I2/PAn, was prepared, and used in the synthesis of butyraldehyde glycol acetal from butyraldehyde and glycol. Under the following reaction conditions. 0.20 mol butyralde hyde, the molar ratio of butyraldehyde to glycol 1： 1.5, 0.60% catalyst, 8 mL cyclohexane as the water-carrying agent, and reaction time 1. 0 h, the yield of butyraldehyde glycol acetal reached 71.6%.