催化学报

催化学报 ›› 2008, Vol. 29 ›› Issue (1): 10-14.

• 研究论文 • 上一篇    下一篇

从醛无溶剂制备1,1-二乙酸酯的催化剂Cu3/2PMo12O40/SiO2

Razieh FAZAELI, Hamid ALIYAN   

  1. 伊斯兰自由大学化学系, 沙阿礼萨分校 86145-311, 沙阿礼萨, 伊朗
  • 收稿日期:2008-01-25 出版日期:2008-01-25 发布日期:2011-12-25

Cu3/2PMo12O40/SiO2: A Heterogeneous, Eco-friendly and Reusable Catalyst for the Solvent-Free Catalytic Preparation of 1,1-Diacetates from Aldehydes

Razieh FAZAELI*, Hamid ALIYAN*   

  1. Department of Chemistry, Islamic Azad University, Shahreza Branch 86145-311, Shahreza, Iran
  • Received:2008-01-25 Online:2008-01-25 Published:2011-12-25

PDF

864

被引次数

12

摘要： 芳香醛和脂肪醛在温和条件下经乙酸酐和Cu3/2PMo12O40/SiO2催化可转变成1,1-二乙酸酯. 发现Cu3/2PMo12O40/SiO2是在无溶剂存在下制备1,1-二乙酸酯的有效催化剂. 使用同一催化剂和乙腈作溶剂可使生成的1,1-二乙酸酯发生逆反应脱保护生成醛. 这种新的方法具有反应时间短和收率高的优点,而且催化剂重复使用几次不丧失活性.

关键词: 杂多酸, 多缩含氧酸盐, 醛, 1-二乙酸酯, 负载型催化剂

Abstract: Aromatic and aliphatic aldehydes were transformed to1,1-diacetates (acylals) under mild conditions by treatment with acetic anhydride and Cu3/2PMo12O40/SiO2 catalyst. This catalyst was efficient for the preparation of1,1-diacetate under solvent-free conditions. The reverse reaction using the resulting1,1-diacetate was achieved using the same catalyst in acetonitrile as a solvent. This new method has the advantages of excellent yields and short reaction time. The catalyst can be reused several times although it gets less active.

Key words: heteropoly acid, polyoxometalate, aldehyde, 1-diacetate, supported catalyst