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Effect of temperature on lipase-catalyzed esterification in organic solvent

✍ Scribed by Yoshitaka Yasufuku; Shin-ichi Ueji

Publisher
Springer Netherlands
Year
1995
Tongue
English
Weight
254 KB
Volume
17
Category
Article
ISSN
0141-5492

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✦ Synopsis

For the esterification of 2-(4-ethylphenoxy)propionic acid catalyzed by lipase MY (Candida rugosa) in isopropyl ether containing a suitable amount of water, the enantioselectivity for the reaction has become higher asthe reaction temperature increasing.

In contrast, the reverse trend of the temperature effect has been observed for lipase AY (Candida rugosa). A model for these temperature dependence has been proposed.

πŸ“œ SIMILAR VOLUMES

Effects of Substituent and Temperature o
Effects of Substituent and Temperature on Enantioselectivity for Lipase-Catalyzed Esterification of 2-(4-Substituted Phenoxy) Propionic Acids in Organic Solvents
✍ Keiichi Watanabe; Takashi Koshiba; Yoshitaka Yasufuku; Toshifumi Miyazawa; Shin- πŸ“‚ Article πŸ“… 2001 πŸ› Elsevier Science 🌐 English βš– 80 KB

Substituent effects on the enantioselectivity for the lipase-catalyzed esterifications in organic solvents were studied by use of 2-(4-substituted phenoxy)propionic acids as the substrates with various substituents of H, F, Cl, CF 3 , CH 3 , CH 3 CH 2 , and CH 3 O. The distinction in the behavior of

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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