A mild and eco-friendly visible-light-induced direct radical cross-coupling perfluoroalkylation of the imidazo[1,2-a]pyridines with perfluoroalkyl iodides was established. This method leads to a facile and practical synthesis of valuable 3-perfluoroalkyl substituted...

Solubilities of carbon tetrachloride in four imidazolium ionic liquids including 1-butyl-3-methyl imidazolium bis(trifluoromethyl sulfonyl) imide (), and 1-butyl-3-methyl imidazolium tetrafluoroborate ([Bmim][BF 4 ]) have been experimentally determined using the doubleliquid phase isothermal equilibrium method in the temperature range from (298.15 to 318.15) K and at ambient pressure. An empirical equation was proposed to correlate the solubility data with temperatures. The dissolving thermodynamic function variations involving ΔG s θ , ΔH s θ , and ΔS s θ have been evaluated based on the solubility results. Through the calculation and analysis for polarity, steric hindrance, and interaction energy of CCl 4 with the anions, the sequence of dissolving ability of the ionic liquids for CCl 4 was discussed, and a dissolution mechanism as well as dissolution driving force have been suggested. The results show that at a certain temperature the dissolving ability of the ionic liquids for CCl 4 changes in the orderand the dissolving ability of each ionic liquid goes up with an increase in temperature. The dissolution of CCl 4 in the ionic liquids is an endothermic, enthalpy-driven process.