Alkylation of Phenols on Fe_2O_3 and Cr_2O_3
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概要
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Ferric oxide and chromium oxide, were found as new alkylation catalysts of phenols. The activity and the selectivity of these oxide catalysts were examined by liquid-phase reaction. Methylation of phenol, cresol, xylenol, and α-naphthol was carried out in an autoclave at 400°, using methanol as an alkylating agent. The selective methylation of phenols to their ortho-position took place, and o-cresol and 2,6-xylenol were obtained selectively from phenol. Their yield reached 70% after 5 hr. Ferric oxide was effective only in methanol, whereas chromium oxide was available for C_1 to C_4 alcohols. From the distribution of methylated products on various oxides, an outline of oxide-catalyzed alkylation was presented.
- 公益社団法人日本薬学会の論文
- 1976-09-25
著者
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榎本 三郎
Faculty Of Pharmaceutical Sciences Toyama Medical And Pharmaceutical University
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井上 正美
Faculty Of Pharmaceutical Sciences Toyama Medical And Pharmaceutical University
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