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Current Topics in Catalysis   Volumes    Volume 11 
Abstract
Cyclohexanone monooxygenase mediated Baeyer-Villiger oxidation of cyclic ketones to lactones in the presence of ionic liquids
Agnieszka Drożdż, Anna Chrobok
Pages: 25 - 36
Number of pages: 12
Current Topics in Catalysis
Volume 11 

Copyright © 2014 Research Trends. All rights reserved

ABSTRACT
 
In this work the use of ionic liquids in the Baeyer-Villiger oxidation of cyclic ketones to lactones, mediated by cyclohexanone monooxygenase, is presented. The influence of the structure of various ionic liquids on the activity of cyclohexanone monooxygenase was studied. The selected cations of the ionic liquids represented a variety of structures: aromatic, cyclic aliphatic, and aliphatic. The anions were chosen from hydrophobic and hydrophilic groups. The activity of the enzyme was found to depend on the cation structure. The best reaction performance was reached via the addition of 17 v/v% 1-butyl-1-methylpyrrolidinium bistriflimide. The complete conversion of 4-methylcyclohexanone to high purity 4-methylcaprolactone (enantiomeric excess 99%, R isomer) was achieved after 2 h.
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