从醛无溶剂制备1，1-二乙酸酯的催化剂Cu3／2PMo12O40／SiO2  

Cu_(3/2)PMo_(12)O_(40)/SiO_2: A Heterogeneous, Eco-friendly and Reusable Catalyst for the Solvent-Free Catalytic Preparation of 1,1-Diacetates from Aldehydes

作　　者：Razieh FAZAELI Hamid ALIYAN 

机构地区：[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

出　　处：《催化学报》2008年第1期10-14,共5页

基　　金：伊斯兰自由大学沙阿礼萨分校(86145-311)

摘　　要：芳香醛和脂肪醛在温和条件下经乙酸酐和Cu_(3/2)PMo_(12)O_(40)/SiO_2催化可转变成1,1-二乙酸酯.发现Cu_(3/2)PMo_(12)O_(40)/SiO_2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.Aromatic and aliphatic aldehydes were transformed to 1,1-diacetates （acylals） under mild conditions by treatment with acetic anhydride and Cu3/2PMo12O40/SiO2 catalyst. This catalyst was efficient for the preparation of 1,1-diacetate under solvent-free conditions. The reverse reaction using the resulting 1,1-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.

关 键 词：杂多酸 多缩含氧酸盐 醛 1 1-二乙酸酯 负载型催化剂 

分 类 号：O643.36[理学—物理化学]