SYNTHESIS OF TRIMETHYLPHENOLS IN THE CATALYTIC ALKYLATION OF XYLENOL AND METHANOL AND APPLICATION IN THE PRODUCTION OF VITAMIN E (TOCOPHEROL)
SYNTHESIS OF TRIMETHYLPHENOLS IN THE CATALYTIC ALKYLATION OF XYLENOL AND METHANOL AND APPLICATION IN THE PRODUCTION OF VITAMIN E (TOCOPHEROL)
In this article, the alkylation reactions of 2,6-, 2,5- and 2,3-dimethylphenols in the presence of methanol and CrCaY zeolite were investigated. The experiments were carried out at a temperature of 360°C and a volume flow rate of 0.82 st·¹. The results show that, regardless of the catalyst composition, the main conversion product of 2,6-dimethylphenol is 2,4,6-trimethylphenol. In the presence of CrCaY zeolite, 2,3,6-trimethylphenol is also formed with some selectivity. The potential application of trimethylphenols obtained in the alkylation process in the synthesis of tocopherol (vitamin E) is emphasized.
2,3,6 trimethylphenol, 2, 4, 6 trimethylphenol, xylenol, methanol, methylphenol, cresol, vitamin E (tocopherol), application of trimethylphenols
2,3,6 trimethylphenol, 2, 4, 6 trimethylphenol, xylenol, methanol, methylphenol, cresol, vitamin E (tocopherol), application of trimethylphenols
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