Application In Synthesis of 1,3-Dimesityl-1H-imidazol-3-ium tetrafluoroborate. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 1,3-Dimesityl-1H-imidazol-3-ium tetrafluoroborate, is researched, Molecular C21H25BF4N2, CAS is 286014-53-7, about Structural elucidation and characterization of N-heterocyclic salts with various anions. Author is Kim, Ji Hye; Jo, Kyoung A.; Son, Young Hoon; Park, Sae Rom; Ahn, Kwang-Hyun; Kang, Eun Joo.
We prepared imidazolium salts with various anions (BF4- PF6-, SbF6-, ClO4-, -OTf, RSO3- , RPO4-, PhCO2- ) from imidazolium chloride by anion exchange with silver salts or imidazolylidene by reprotonation. The FAB+ and FAB- modes for mass anal. proved to be crucial for determination of the anion’s structure, and 1H-NMR signals of C-2 proton provided general insights into interactions with counteranions. Most importantly, the triazolium sulfonate carbene precursor catalyzed the intramol. aldehyde-ketone benzoin reaction in high yield,even with strong base, K+ -O-tert-Bu. The extension of the method to the syntheses of ionic liquids (ILs) and the development of new catalytic reactions and diastereoselective variants are subjects of ongoing investigations.
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