DBU-Based Dicationic Ionic Liquids Promoted Esterification Reaction of Carboxylic Acid with Primary Chloroalkane Under Mild Conditions
作者:Yang Liu、Guijie Mao、Hongyan Zhao、Jinyi Song、Huatao Han、Zhuofei Li、Wenyi Chu、Zhizhong Sun
DOI:10.1007/s10562-017-2184-4
日期:2017.11
dicationic ionic liquids with different anions were successfully synthesized by the reaction of DBU and 1, 6-dichlorohexane. Therein, the dicationic ionic liquid 1, 1′-(hexane-1, 6-diyl)bis(1, 8-diazabicyclo [5.4.0]undec-7-enium) dichlorine (IL-1) was successfully employed as an efficient catalyst in esterification reaction of carboxylic acids with primary chloroalkanes under mild conditions without any
通过DBU与1,6-二氯己烷反应,成功合成了一系列具有不同阴离子的DBU基(DBU = 1, 8-二氮杂双环[5.4.0] undec-7-ene)双阳离子离子液体。其中,双阳离子离子液体 1, 1'-(己烷-1, 6-二基)双(1, 8-二氮杂双环 [5.4.0] undec-7-enium) 二氯 (IL-1) 被成功用作高效羧酸与伯氯烷烃在温和条件下进行酯化反应的催化剂,无需任何额外的碱性试剂。此外,优化的催化剂可以有效地重复使用5次,催化效果没有任何显着变化。改进后的协议不仅高效,而且绿色无污染。 图文摘要