Reactivity of alkali and alkaline earth metal tetrafluorobromates towards aromatic compounds and pyridine
| Autor: | R.V. Ostvald, V.I. Sobolev, V.B. Radchenko, I. I. Zherin, Victor D. Filimonov |
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| Rok vydání: | 2016 |
| Předmět: |
Bromine trifluoride
010405 organic chemistry Chemistry Organic Chemistry 010402 general chemistry Alkali metal 01 natural sciences Biochemistry Toluene Medicinal chemistry 0104 chemical sciences Inorganic Chemistry Nitrobenzene chemistry.chemical_compound Reagent Pyridine Environmental Chemistry Organic chemistry Reactivity (chemistry) Physical and Theoretical Chemistry Benzene |
| Zdroj: | Journal of Fluorine Chemistry. 192:120-123 |
| ISSN: | 0022-1139 |
| DOI: | 10.1016/j.jfluchem.2016.10.022 |
| Popis: | The bromination activity of tetrafluorobromates of alkali and alkali-earth metals increases in the order KBrF4, CsBrF4, RbBrF4 and Ba(BrF4)2. The most active tetrafluorobromate—Ba(BrF4)2 is able to selectively brominate the deactivated aromatic compounds nitrobenzene and 4-nitrotoluene, but not the activated compounds benzene and toluene. In all cases bromination of methyl groups of methylbenzenes does not occur. Ba(BrF4)2 forms the known complex C6H5N·BrF3 when reacted with pyridine. Due to dilution by inert BaF2, this pyridine-based complex is air stable and can be considered as safer and more convenient reagent in comparison with the original fluorobromates; it can selectively brominate benzene and toluene in contrast with tetrafluorobromates. |
| Databáze: | OpenAIRE |
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