Reaction of N-heterocyclic carbene (NHC) with different HF sources and ratios – A free fluoride reagent based on imidazolium fluoride
| Autor: | Gašper Tavčar, Blaž Alič |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010405 organic chemistry
Organic Chemistry Inorganic chemistry Nuclear magnetic resonance spectroscopy Crystal structure 010402 general chemistry 01 natural sciences Biochemistry Medicinal chemistry 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound Hydrofluoric acid chemistry Reagent Yield (chemistry) Anhydrous Environmental Chemistry Physical and Theoretical Chemistry Carbene Fluoride |
| Zdroj: | Journal of Fluorine Chemistry. 192:141-146 |
| ISSN: | 0022-1139 |
| DOI: | 10.1016/j.jfluchem.2016.11.004 |
| Popis: | Treatment of N-heterocyclic carbene (1,3-Bis(2,6-diisopropylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene; (LDipp)) with different sources of hydrofluoric acid (Et3N∙3HF, anhydrous hydrofluoric acid and KHF2) in 1:1, 1:2, 1:3 ratios affords [(LDipp)H]+[F]− (1), [(LDipp)H]+[(HF)F]− (2) and [(LDipp)H]+[(HF)2F]− (3) salts respectively. Different fluoride sources all yield the same products, but ease of manipulation and isolation can influence the choice in the future use. Compound (1), which shows characteristics of a free fluoride reagent, can be obtained with good yield and without the contaminants usually present in such compounds. All products were characterized by X-Ray crystallography, NMR spectroscopy and free fluoride (Ff−) chemical analysis. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect