The effect of the acyl group of acylating agents on the enantioselectivity in the lipasecatalyzed transesterifications of racemie 2-[(N,N-dimethylearbamoyl)methyl]-3-eyelopenten-l-ol in diisopropyl ether was found 1o be significant. The enantioselectivity was enhanced markedly by changing the aeylat
Adverse effect of chloride impurities on lipase-catalyzed transesterifications in ionic liquids
β Scribed by Sang Hyun Lee; Sung Ho Ha; Sun Bok Lee; Yoon-Mo Koo
- Book ID
- 106363609
- Publisher
- Springer Netherlands
- Year
- 2006
- Tongue
- English
- Weight
- 155 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0141-5492
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Lipase-catalyzed transesterifications of cis-and Iran.+4-methylcyclohexanols with vinyl acetate in various organic solvents have been studied, and the cffcct of' solvent on activity and stereoselectivity of lipase has been investigated. Initial rate of the reaction increases with the increase in hyd
## Abstract **BACKGROUND:** Seven ionic liquids (ILs) based on 1βalkylβ3βmethylimidazolium cation in combination with hexafluorophosphate and bis{(trifluoromethyl)sulfonyl}imide anions were tested as reaction media for lipaseβcatalyzed transesterification in low water conditions. With the aim of im
The V,, and KM of various forms of lipase from Pseudomonas cepacia ( powder, adsorbed onto Celite or covalently linked to polyethylene glycol ) were determined in organic solvents preequilibrated to water activities ( a, ) from ~0.1 to 0.84. The model reaction was the transesterification between n-o