应用化学2011，Vol.28Issue(1)：118-120,3.DOI:10.3724/SP.J.1095.2011.00216
吡咯烷酮酸性离子液体中硼酸酯的催化合成
Synthesis of Boric Acid Ester Catalyzed by Pyrrolidonium Acidic Ionic Liquid
摘要
Abstract
Esterfication reaction of bone acid, pinacol and cyclohexanol has been studied in ionic liquids (IL), including l-methyl-2-pyrrolidonium hydrogen sulfate ([ Hnmp ] HSO4 ) , l-butyl-3-methylimidazolium tetrafluoroborate( [ Bmim ] BF4 ) and l-butyl-3-methylimidazolium hexafluorophosphate ([ Bmim ] PF6 ). The influences of the types of ionic liquids, reaction temperature, reaction time and molar ratio of reactants to IL on the yields of 2-cyclohexyloxy-4,4,5, 5-tetramethyl-[ 1,3,2] dioxaborolan have been investigated. The results showed that under the optimized conditions [ n ( boric acid ) ∶ n ( pinacol ) ∶ n ( cyclohexanol) : n([Hnmp]HSO4) =1∶1∶1∶1, 70 ℃ and 4 h], the yield of 2-cyclohexyloxy-4,4,5,5-tetramethyl-[ 1,3,2] dioxaborolan could reach up to 72.5％. The ionic liquid can be used repeatedly for four times without remarkable loss of the catalytic activity.关键词
离子液体/酯化反应/硼酸酯/绿色化学分类
化学化工引用本文复制引用
庄丽珍,张婷婷,王延伟,梁洪泽..吡咯烷酮酸性离子液体中硼酸酯的催化合成[J].应用化学,2011,28(1):118-120,3.基金项目
浙江省大学生科技创新活动计划(新苗人才计划),宁波市科技局自然科学基金(2009A610047)资助项目 （新苗人才计划）
