ChemInform Abstract: gem-Difluorination in Superacid: The Dramatic Role of Halonium Ions
Autor: | Fei Liu, Jean-Claude Jacquesy, Fabien Zunino, Christian Berrier, Christian Bachmann, Marie-Paule Jouannetaud, Sébastien Thibaudeau, Agnès Martin-Mingot |
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Rok vydání: | 2009 |
Předmět: | |
Zdroj: | ChemInform. 40 |
ISSN: | 1522-2667 0931-7597 |
Popis: | In HF/SbF 5 , in the presence of CCl 4 or NBS, unsaturated or hydroxylated piperidines yield difluoroanalogues in good yields. The ability to perform hydride abstraction on chloroderivatives, and the ability to form bridged bromonium ions from unsaturated substrates seem to completely influence the reaction course. Some aspects of the mechanism were clarified by DFT calculations. |
Databáze: | OpenAIRE |
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