Acid Catalyzed Competitive Esterification and Ketalization of Levulinic Acid with 1,2 and 1,3-Diols: The Effect of Heterogeneous and Homogeneous Catalysts

被引：26

作者：

Amarasekara, Ananda S. ^{[1
]}

Animashaun, Moriam A. ^{[1
]}

机构：

[1] Prairie View A&M Univ, Dept Chem, Prairie View, TX 77446 USA

来源：

CATALYSIS LETTERS | 2016年 / 146卷 / 09期

基金：

美国国家科学基金会;

关键词：

Levulinic acid; 1,2-Ethanediol; 1,2-Propanediol; 1,3-Propanediol; Acid-catalysis; ETHYLENE-GLYCOL; CONVERSION; LIQUEFACTION; CELLULOSE; PRODUCTS;

D O I：

10.1007/s10562-016-1812-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Condensation reactions of levulinic acid (LA) with 1,2-ethanediol (1,2-ED), 1,2-propanediol (1,2-PD), and 1,3-propanediol (1,3-PD) were studied using Amberlyst-15 as well as p-toluenesulfonic acid catalysts in benzene under Dean-Stark conditions. In Amberlyst-15 catalyzed reactions the products are ketals and ketal-esters, whereas p-toluenesulfonic acid catalyzed reactions produce esters and ketal-esters as products. In p-toluenesulfonic acid catalyzed reactions with 1,2-ED and 1,3-PD, LA monoester product is formed as the major product after 180 min in 75 and 97 % yields respectively. Unlike the previously reported acid catalyzed ketalization of ethyl levulinate with diols, combined ketalization-esterification of LA with diols is a complex process.

引用

页码：1819 / 1824

页数：6

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