S.B., Halligudi and C.S , Sajanikumari and N.K , Kala Raj and S.S , Deshpande and M.P , Degaonkar (2001) Liquid phase allylation of phenol using H zeolite. Journal of Molecular Catalysis A: Chemical , 175 . pp. 161-167.
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Abstract
Investigations on the allylation of phenol with allyl acetate were carried out using H-30 catalyst. The allylation of phenol (molar ratio of AAc: phenol = 1:1) gave mainly allyl phenyl ether along with C-allylated products (ortho- and para-allyl phenols) at 90◦Cin a stirred vessel.Whenphenol is taken in excess and at higher temperatures side reactions like polymerization was observed. The rate dependence study indicated that the rate of allylation has a first-order dependence with respect to catalyst, allyl acetate and phenol concentration. From the study on the effect of temperature, the rates of allylation were plotted as −ln(rate) versus 1000/T (Arrhenius plot) and the activation energy Ea evaluated was found to be 7.12 kcal mol−1. Based on the above observations, a speculative mechanism for allylation of phenol catalyzed by H-30 has been proposed.
Item Type: | Article |
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Subjects: | Science > Chemistry |
ID Code: | 296 |
Deposited By: | INVALID USER |
Deposited On: | 02 Mar 2007 04:02 |
Last Modified: | 02 Mar 2007 04:02 |
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