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1000495 
Journal Article 
Hydrolysis of 4-methoxyphenylacetic acid butyl ester under liquid–liquid biphasic phase transfer condition and their kinetics 
Maw-Ling Wang; P.A. Vivekanand; Ming-Chan Yu 
2011 
1 
Taiwan Institute of Chemical Engineers. Journal
ISSN: 1876-1070 
43 
2 
207-214 
English 
WOS:000301323400007 
Hydrolysis of 4-methoxyphenylacetic acid butyl ester (MPABE) with aqueous potassium hydroxide and catalyzed by tetrabutylammonium bromide in chlorobenzene was investigated in this work. Hydrolysis reaction is greatly enhanced using tetrabutylammonium bromide in the presence of potassium hydroxide in an organic solvent/aqueous solution two-phase medium. The main purpose of this study was to investigate the kinetic behavior, mechanism, and activation energy of the reaction system. Influence of experimental parameters viz., stirring speed, amount of catalyst, different solvents, amount of potassium hydroxide, different inorganic salts, different phase transfer catalysts and temperature on rate of hydrolysis is presented. A rational mechanism for the hydrolysis is proposed according to the experimental evidence. Crown Copyright (C) 2011 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved. 
Ester hydrolysis;Phase transfer catalysis;4-Methoxyphenylacetic acid butyl ester;Potassium hydroxide;Kinetics;Agitation speed 
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