V. , Murugesan and K.K. , Cheralathan and M, Karthik (2004) Catalysis by materials for fine chemicals production. Bulletin of the Catalysis Society of India, 3 . pp. 23-42.
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Abstract
Liquid phase alkylation of phenol with 4-hydroxybutan-2-one, cyclisation of (phenylthio)acetaldehyde diethylacetal and elcectrophilic substitution of indole with a variety of aromtic aldehydes were investigated over Hβ, HY, H-ZSM-5, ion-exchanged β and Y zeolites and modified zeolites. Raspberry ketone was obtained regioselectively over Hβ (Si/Al=10) catalyst in 77 % yield. This product is formed not only by direct alkylation but also by the facile rearrangment of O-alkylated product. Zn2+ ion-exchanged β and Y zeolites showed better activity than its H-form counterpart owing to its higher Lewis acidity in the formation of benzo[b]thiophene and bis(indolyl)methanes respectively.
| Item Type: | Article |
|---|---|
| Subjects: | Science > Chemistry |
| ID Code: | 191 |
| Deposited By: | INVALID USER |
| Deposited On: | 28 Feb 2007 16:35 |
| Last Modified: | 28 Feb 2007 16:35 |
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