摘要
以结晶三氯化铝为原料制备了甲基磺酸铝,并以甲基磺酸铝为催化剂,环己烷为带水剂,用苯乙醛和乙二醇为原料合成了苯乙醛缩乙二醇,考察了影响产品收率的因素,优化了合成条件。该反应的较佳反应条件是:n(苯乙醛)∶n(乙二醇)为1∶2.0,甲基磺酸铝用量为2.0 g,环己烷10 mL(苯乙醛用量为0.1 mol时),回流2.0 h,苯乙醛缩乙二醇的收率达80.6%。实验结果表明,甲基磺酸铝对缩醛的合成反应具有较高的催化活性。
Phenylacetaldehyde glycol acetal was synthesized from phenylacetaldehyde and glycol catalyzed by aluminium methanesulfonate. The catalyst was prepared from crystalline aluminium chloride. The optimal process conditions are obtained as follows： the molar ratio of the reactants is n（phenylacetaldehyde） ： n（glycol） = 1：2.0; the dosage of aluminium methane-sulfonate is 2.0 g and water carrying agent （cyclohexane） is 10 mL （for 0.1 tool phenylacetaldehyde） ; reaction time with reflux is 2.0 h. The yield can achieve 80.6%. The results showed that aluminium methanesulfonate has higher catalytic activity on the synthesis of acetal.
出处
《日用化学工业》
CAS
CSCD
北大核心
2007年第5期348-350,共3页
China Surfactant Detergent & Cosmetics
基金
南通大学自然科学基金资助项目(6Z024)
关键词
香料
苯乙醛缩乙二醇
甲基磺酸铝
催化合成
aromatics
phenylacetaldehyde glycol acetal
aluminium methanesulfonate
catalytic synthesis
