ZrOCl2·8H2O: An Efficient, Cheap and Reusable Catalyst for the Esterification of Acrylic Acid and Other Carboxylic Acids with Equimolar Amounts of Alcohols

Molecules

Hong-Bin Sun¹  Ruimao Hua¹ 

[1]Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Beijing 100084, China

关键词: Esterification;    acrylic acid;    carboxylic acid;    alcohol;    zirconium (IV) dichloride oxide hydrate;   

DOI  :  10.3390/11040263

来源: mdpi

【 摘 要 】

Esterifications of carboxylic acids with equimolar amount of alcohols could be efficiently catalyzed by ZrOCl₂·8H₂O. Acrylate esters were obtained in good yields under solvent-free conditions at ambient temperature. The esterification of other carboxylic acids with alcohols also proceeded at ambient temperature or at 50 ^oC to afford esters in high yields. If the esterification was performed in toluene under azeotropic reflux conditions to remove water, both the catalytic activity of ZrOCl₂·8H₂O and the rate of esterification could be increased greatly. Furthermore, in the present catalytic system, the esters could be easily separated from the reaction mixtures and the catalyst could be easily recovered and reused.

【 授权许可】

Unknown   
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