2,2,6,6-Tetramethylpiperidinium triflate (TMPT): a highly selective and self-separated catalyst for esterification
作者:Lan Gao、Taoping Liu、Xiaochun Tao、Yongmin Huang
DOI:10.1016/j.tetlet.2016.09.061
日期:2016.11
An eco-friendly and readily accessible 2,2,6,6-tetramethylpiperidinium triflate was found as highly-selective and self-separated catalyst for esterification under solvent-free condition. The X-ray crystallography revealed that it formed a ‘hydrophobic wall’ which could effectively eliminate the generated water from the reactive sites. Moreover, it could precipitate from the reaction system with excellent
发现一种环保且易于获得的三氟甲磺酸2,2,6,6-四甲基哌啶鎓是在无溶剂条件下酯化的高选择性和自分离催化剂。X射线晶体学显示它形成了一个“疏水壁”,可以有效地消除反应位点产生的水。而且,它可以以优异的回收率(> 99%)从反应体系中沉淀出来,可以重复使用十次而活性没有任何显着损失。