The Stereotchemistry Effect of Eugenol, C/S-Isoeugenol and Trans-Isoeugenol on Their Catalytic Hidrogenation = Pengaruh Stereokimia Molekul Eugenol, cis-Isoeugenol, dan trans-Isoeugenol Pada Reaksi Hidrogenasi Katalitik
| Main Author: | Perpustakaan UGM, i-lib |
|---|---|
| Format: | Article NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2004
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/17627/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=386 |
Daftar Isi:
- The stereochemistry effect of eugenol, cis-isoeugenol and trans-isoeugenol on their catalytic hydrogenation by Ni/y-Al203 catalyst was investigated. In this investigation, the catalyst is prepared by impregnation of Nickel into solid of y-Al203 in methanol as a solvent. The calcination process, which is followed by reduction, is performed on Muchalal reactor at 400 °C. After that, the catalytic hydrogenation is carried out under hydrogen gas atmosphere by mixing 10 mL sample and 0.5 g Ni/y-Al203 catalyst at 200°C for 3 hours. The stereochemistry effect of reactants is evaluated by computer modelling using PM3 semiempirical methods. The mass spectrum of catalytic hydrogenation product from those compounds shows a molecular ion at Ink 164, which proves the existence of 2 �methoxy-4-propylphenol. The eugenol gives the highest conversion (99%), followed by cis-isoeugenol (81%) and trans-isoeugenol (67%). It was found that there is a correlation between the stereochemistry of those compounds and catalytic reactivity. Keywords: stereochemistry effects, 2-methoxy-4-propylphenol