【摘要】 在室温下将(R)-四氢噻唑-2-硫酮-4-甲酸与氢氧化N-烷基吡啶或氢氧化1,3-二烷基苯并咪唑反应,合成了6种新型手性离子液体;其结构经核磁共振波谱(1H NMR,13C NMR)、红外光谱(IR)和电喷雾质谱(ESI-MS)表征;测定了其旋光度和p H值,并对其溶解性、电导率及热稳定性进行了研究.结果表明,合成的6种离子液体均为弱酸性,室温下可溶解于极性较强的有机溶剂;当其水溶液浓度为1×10-3mol/L时,电导率随着温度的升高而增大;在150和250℃有2个失重阶段,可能是阴、阳离子分别失重的过程,热稳定性较好.更多还原

【Abstract】 A novel series of chiral ionic liquids from( R)-thiazolidine-2-thione-4-carboxylic acid and hydroxide 1,3-dialkylbenzimidazole or hydroxide 1-alkyl pyridine was synthesized. The structures of the ionic liquids were confirmed by1 H NMR,13 C NMR,IR and ESI-MS. The optical rotation and p H value of the chiral ionic liquids were determined. Furthermore,the solubility,electrical conductivity and thermal stability of the ionic liquids were studied as well. The results revealed that the ionic liquids with weak acidity and good solubility in strongly polar organic solvents under room temperature. When the concentration of the ionic liquids in the aqueous solution was 1×10-3mol / L,increasing the conductivity was almost proportional to the temperature increases. The TGA results showed that the ionic liquids had two mass loss process under 150 and 250 ℃,caused by anion and cation,respectively.更多还原