Acetalization of aldehydes (Ketones) with diols catalyzed by Bronsted acidic ionic liquids

作者：Zhang F^*; Xu DQ; Liu BY; Luo SP; Yang WL; Xu ZY

来源：Chinese Journal of Catalysis, 2005, 26(9): 815-818.

• acidic ionic liquid
• aldehyde
• ketone
• diol
• acetalization

The acetalization of aldehydes or ketones with diols to the corresponding 1,3-dioxolane derivatives was performed at room temperature in the absence of any organic solvent and dehydration agent by using different acidic ionic liquids as catalysts, including HMImBF(4), HeMImBF(4), BMImH(2)PO(4), BMImHSO(4), H2SO4 and H3PO4. Among these acids, the Bronsted acidic ionic liquid BMImH(2)PO(4) showed the best catalytic performance. The conversion depended on the properties of the substrates in this reaction. The easier the nucleophilic addition of diols to aldehydes /ketones was, the higher conversion it gave. During the reaction process the removal of water produced was unnecessary. After the reaction the desired product 1,3-dioxolane derivatives could be isolated from the reaction system automatically, and the after-treatment was convenient. The acidic ionic liquid could be reused directly without dehydration for at least 10 times.

• 出版日期2005-9
• 单位浙江工业大学