کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
71110 | 48870 | 2008 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Design of phosphonium ionic liquids for lipase-catalyzed transesterification Design of phosphonium ionic liquids for lipase-catalyzed transesterification](/preview/png/71110.png)
Ionic liquids are now recognized as solvents for use in lipase-catalyzed reactions; however, there still remains a serious drawback in that the rate of reaction in an ionic liquid is slower than that in a conventional organic solvent. To overcome this problem, attempts have been made to evolve phosphonium ionic liquids appropriate for lipase-catalyzed reaction; several types of phosphonium salts have been prepared and their capability evaluated for use as solvent for the lipase-catalyzed reaction. Very rapid lipase PS-catalyzed transesterification of secondary alcohols was obtained when 2-methoxyethyl(tri-n-butyl)phosphonium bis(trifluoromethanesulfonyl)imide ([MEBu3P][NTf2]) was used as solvent, affording the first example of a reaction rate superior to that in diisopropyl ether.
Journal: Journal of Molecular Catalysis B: Enzymatic - Volume 51, Issues 3–4, 1 April 2008, Pages 81–85