Guanidine based task specific ionic liquids for the synthesis of biolubricant range esters under solvent-free condition
作者:Jyoti Porwal、Subodh Kumar、Savita Kaul、Suman L. Jain
DOI:10.1039/c6ra19771j
日期:——
Guanidine-based task specific ionic liquids (ILs) were synthesized from the reaction of 1,1,3,3-tetramethyl guanidine with protic acids and used for the synthesis of higher alcohol esters of fatty acids as biolubes under solvent free condition. The synthesized 1,1,3,3-tetramethylguanidinium hydrogen sulphate (TMG·HSO4) was found to be most effective among the different ILs including 1,1,3,3-tetramethylguanidinium
由1,1,3,3-四甲基胍与质子酸反应合成了基于胍的特定任务离子液体(ILs),并用于在无溶剂条件下合成脂肪酸的高级醇酯作为生物润滑脂。发现合成的1,1,3,3-四甲基胍硫酸氢盐(TMG·HSO 4)在不同的IL中最有效,包括1,1,3,3-四甲基胍乙酸盐(TMG·Ac),1,1, 3,3-四甲基胍基磷酸氢盐(TMG·H 2 PO 4)和1,1,3,3-四甲基胍基三氟乙酸盐(TMG·TFA)。反应温度,反应时间,催化剂用量等各种反应参数的影响已经研究过了。反应完成后,分离出酯化产物,并将回收的IL重复使用几次,而不会损失催化活性。