Combining Bio- and Chemo-Catalysis for the Conversion of Bio-Renewable Alcohols: Homogeneous Iridium Catalysed Hydrogen Transfer Initiated Dehydration of 1,3-Propanediol to Aldehydes

Yue-Ming Wang, Fabio Lorenzini, Martin Rebros, Graham C. Saunders, Andrew C. Marr

Research output: Contribution to journalArticle

11 Citations (Scopus)
246 Downloads (Pure)

Abstract

Combining whole cell biocatalysis and chemocatalysis in a single reaction sequence avoids unnecessary separations, and the associated waste and energy consumption. Bacterial fermentation has been employed to convert waste glycerol from biodiesel production into 1,3-propanediol. This 1,3-propanediol can be extracted selectively from the aqueous fermentation broth using ionic liquids. 1,3-propanediol in ionic liquid solution was converted to propanal by hydrogen transfer initiated dehydration (HTID) catalysed by a Cp*IrCl2(NHC) (Cp* = pentamethylcyclopentadienyl; NHC = carbene ligand) complex. The use of an ionic liquid solvent enabled the reaction to be performed under reduced pressure, facilitating the isolation of the product, and improving the reaction selectivity. The Ir(III) catalyst in ionic liquid was found to be highly recyclable.
Original languageEnglish
Pages (from-to)1751-1761
Number of pages11
JournalGreen Chemistry
Volume18
Issue number6
Early online date09 Nov 2015
DOIs
Publication statusPublished - Mar 2016

Keywords

  • Catalysis
  • Sustainability
  • Ionic Liquids

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