CoCl42− which provides magnetically recovering of Co4ChDES in cooperation with the four choline groups are hydrogen bond-acceptor and hydrogen bond-donor components of this DES. The 0.75 mol% and 1.5 mol% of Co4ChDES represented high catalytic performance in the water-based multi-component reactions (MCRs) for the synthesis of substituted tetrahydropyrazolopyridines (THDPPs) and pyrroles under very mild conditions
通过筛选CoCl 2 ·6H 2 O和
氯化胆碱(ChCl)的固液平衡混合物中不同摩尔比的组分,检测出一种新的磁响应深共晶(MDE),然后进行真空蒸发。在这些络合物中,蓝色络合物2ChCl·2Ch +:CoCl 4 2-(Co4ChDES),以1:4摩尔比的CoCl 2给出:ChCl表现出mp以及顺磁性的下降非常深。通过mp,UV-vis和FT-IR对所有络合物进行了比较,同时通过能量色散X射线光谱(EDX),振动样品磁强(VSM)和EDS作图对Co4ChDES进行了精细分析。Co4ChDES的正磁响应,表面元素分析和典型的UV-vis吸收波长证实了该DES结构中存在磁性四面体抗衡离子CoCl 4 2-。阴离子络合物CoCl 4 2-与四个
胆碱基团一起提供Co4ChDES的磁性回收的是该DES的氢键受体和氢键供体组分。0.75 mol%和1.5 mol%的Co4ChDES在非常温和的条件下,