71-91-0Relevant articles and documents
Versatile Method for the Simultaneous Synthesis of Two Ionic Liquids, Otherwise Difficult to Obtain, with High Atom Economy
Szpecht, Andrea,Zajac, Adrian,Zielinski, Dawid,Maciejewski, Hieronim,Smiglak, Marcin
, p. 972 - 983 (2019/08/06)
A new synthetic approach and full spectral (NMR, IR, MS) and ion chromatographic characterization (IC) of nitrogen-based ionic liquids bearing allyl- or ethyl- substituent and triflate, tosylate, methyl sulfate or methanesulfonate anion has been presented. On a sample of 16 new ionic liquids, the versatility of the anion exchange method has been proven. In the metathesis reactions that have been carried out, the halide anion was exchanged in ionic liquid with an alkyl sulfonate based anion using alkylating agents. The results obtained using ion chromatographic analysis on the newly synthesized compounds have been discussed. Also, the utilization of a gaseous methyl halide by-product, obtained in the metathesis reaction and otherwise difficult to synthesize, has been presented. This approach ensured high atom economy of the overall process, which makes the proposed methodology sustainable and eco-friendly.
Method of producing oxyborate Tetracyanobicyclo (by machine translation)
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Paragraph 0088, (2016/12/26)
PROBLEM TO BE SOLVED: To provide a method for efficiently producing a tetracyanoborate compound (VI). SOLUTION: A boron compound (for example, boron trichloride) and an ammonium derivative having a halogenide ion as a counter anion are mixed in xylol; then, a trialkylsilyl cyanide is added and reacted; the reaction system is subjected to a treatment with hydrogen peroxide, and an extraction treatment with butyl acetate; and butyl acetate is distilled out to obtain a tetracyanoborate compound represented by formula (VI) wherein [Kt]m+ is an ammonium cation; and m=1. In the formula, [Kt]m+ denotes an organic cation or an inorganic cation; and m denotes an integer of 1 to 3. COPYRIGHT: (C)2012,JPO&INPIT
Physicochemical characterization of MFm--based ammonium ionic liquids
Li, Haifang,Zhao, Guoying,Liu, Fangfang,Zhang, Suojiang
, p. 1505 - 1515 (2013/07/26)
A series of ammonium-based ionic liquids (ILs), which share a homologous series of cations (CH3CH2)3N+(C nH2n+1) with n = 2, 4, 6, 8 and the anions with either BF4-, PF6-, or SbF6 -, was synthesized. Their structures were confirmed by 1H and 13C NMR, ESI-MS, and elemental analysis. Meanwhile, the content of impurity (e.g., water and bromide ions) was also determined using Karl Fischer titrator and ion chromatography. The thermal properties of the ILs were determined by TGA and DSC. Five of the investigated ILs have been shown to have a low melting point (2222]BF4, N,N,N,N-tetraethylammonium hexafluorophosphate, [N2222]PF6, N,N,N- triethylhexylammonium tetrafluoroborate, [N2226]BF4, N,N,N-triethyloctylammonium hexafluorophosphate, [N2228]PF 6 and N,N,N-triethyloctylammonium hexafluoroantimonate, [N 2228]SbF6. Densities, refractive indices, and miscibility of these 12 ILs were well studied systematically. Moreover, from the analysis of the structure-property relationship, the role of the alkyl chain length of the cation on these physical properties of the ILs has been assessed, and the influence of the nature of the anions on these experimental data of the ILs has been discussed. The studies may provide valuable contributions for the design and study of ILs.