氨基磺酸催化合成苯甲醛乙二醇缩醛

以氨基磺酸为催化剂合成了苯甲醛乙二醇缩醛，考察了醛醇摩尔比，反应时间，催化剂用量，带水剂用量等因素对苯甲醛乙二醇缩醛收率的影响。结果表明：最适宜的工艺条件是：n（苯甲醛）：n（乙二醇）=1：1．5，催化剂用量占反应物总质量的1．5％，带水剂环己烷用量为16mL（占反应物总质量的2．18％），反应时间1．5h，上述条件下，苯甲醛L--醇缩醛收率可达到83．73％。

Synthesis of Benzaidehyde Ethylene Glycol Acetal with Amin0sulfonic Acid as Catalyst

The benzaldehyde ethylene glycol acetal was synthesized from benzaldehyde and ethylene glycol in the presence of aminosulfanic acid which was used as catalyst. The effects of molar ratio of benzaldehyde to ethylene glycol, reaction time, amount of catalyst and water carrying agent, etc. on the yield of benzaldehyde ethylene glycol acetal were investigated. The best reaction conditions were found as follows： n（benzaldehyde）：n （ethylene glycol）= 1：1.5, the mass ratio of aminosulfonic acid was 1.5% of total reactants, the water carrying agent was 16mL （2.18% of total reactants） and the reaction time was 1.5h. Under these conditions, the yield of benzaldehyde ethylene glycol acetal could reach 83.73%.