Lipase-catalysed transesterification in ionic liquids and organic solvents: a comparative study
โ Scribed by Susheel J Nara; Jitendra R Harjani; Manikrao M Salunkhe
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- French
- Weight
- 126 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
The lipase-catalysed transesterifications of 2-hydroxymethyl-1,4-benzodioxane in two different ionic liquids, 1-butyl-3methylimidazolium hexafluorophosphate, [bmim]PF 6 and 1-butyl-3-methylimidazolium tetrafluoroborate, [bmim]BF 4 and different organic solvents was studied. The hydrophobic and hydrophilic properties of ionic liquids and organic solvents do influence the lipase activity as illustrated from the results. The influence of the ionic liquid as an additive in an organic solvent on this reaction has been demonstrated. The enzymes in ionic liquids in combination can be recycled for several runs without substantial diminution in the lipase activity.
๐ SIMILAR VOLUMES
The molybdenum(VI)-catalysed oxybromination of ethynylbenzene was performed with hydrogen peroxide as oxidant and potassium bromide as source of bromine, in a two-phase water/solvent system, where solvent was either dichloromethane or an ionic liquid. The selectivity was toward 1,2-dibromostyrene wh