Hexafluoroisopropanol as a low-boiling extraction solvent for 5-Hydroxymethylfurfural production

Weingart, Eric GND; Teevs, Linda GND; Krieg, Ramona; Prüße, Ulf GND

In this study, we show that the fluorous alcohol hexafluoroisopropanol (HFIP) can act as a superior solvent for the in situ extraction of 5-hydroxymethylfurfural (HMF) from an aqueous reaction system. HFIP has a far higher partition coefficient for HMF than common extraction solvents such as methyl isobutyl ketone (MIBK) and n-butanol and has a significantly lower boiling point of 58–59°C. In a system containing fructose, HCl as the catalyst, and HFIP as the extraction solvent, a high HMF yield of 89% is achieved, which is far better than the HMF yields in common MIBK/butanol extraction systems. HFIP extracts HMF from the reaction phase without extraction of the fructose educt. In addition, the aqueous catalyst phase can be reused.

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Weingart, Eric / Teevs, Linda / Krieg, Ramona / et al: Hexafluoroisopropanol as a low-boiling extraction solvent for 5-Hydroxymethylfurfural production. 2018.

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