[BMIM][PF6] Promotes the synthesis of halohydrin esters from diols using potassium halides

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2008
Author
Oromí Farrús, Mireia
Eras i Joli, Jordi
Villorbina Noguera, Gemma
Torres i Grifo, Mercè
Llopis-Mestre, Verónica
Welton, Tom
Canela i Garayoa, Ramon
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Abstract
Haloesterification of diverse diols with various carboxylic acids was achieved using potassium halides (KX) as the only halide source in ionic liquids. The best yield was obtained in [BMIM][PF6] when 1,2-octanediol, palmitic acid and KBr were used. This yield was 85% and the regioisomer with the bromine
in primary position was present in a 75:25 ratio. The regioisomeric ratio could be improved using either KCl or some phenylcarboxylic acids. [BMIM][PF6] acts as both reaction media and catalyst of the reaction. To the best of our knowledge, this type of combined reaction using an ionic liquid is unprecedented. The other solvents tested did not lead either to the same yield or to the same regioisomeric ratio.
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http://hdl.handle.net/10459.1/1868
DOI
https://doi.org/10.2116/analsci.24.1341
Is part of
Analytical sciences, 2008, vol. 24, núm. 10, p. 1341-1345
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