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Alkylation of p-substituted phenols by heteropoly acids

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Abstract

Liquid-phase alkylation of p-tert-butylphenol (TBP) and p-cresol by olefins and benzyl chloride in the presence of solid heteropoly acids (HPA) H3PW12O40 and 25% H3PW12O40/SiO2 at 100–150°C provides high yields of mono- and disubstituted products. HPAs are more active than H2SO4, easily separated from the reaction mixture and can be used repeatedly.

Abstract

Алкилирование пара-трет-бетилфенола (ТВФ) и пара-крезола олефирами и бензихлоридом в жидкой фазе в присутствии твердых гетэрополикислот (ГПК) H3PW12O40 и 25% H3PW12O40/SiO2 при 100–150°C дает с высоким выходом моно- и ди-замещенные продукты. ГПК активнее, чем H2SO4, легко от-деляются от реакдионной массы и могет быть истользова-ны повторно.

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Authors and Affiliations

  1. Institute of Catalysis, 630090, Novosibirsk, USSR

    I. V. Kozhevnikov, A. I. Tsyganok, M. N. Timofeeva, S. M. Kulikov & V. N. Sidelnikov

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  1. I. V. Kozhevnikov
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  2. A. I. Tsyganok
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  3. M. N. Timofeeva
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  4. S. M. Kulikov
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  5. V. N. Sidelnikov
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Kozhevnikov, I.V., Tsyganok, A.I., Timofeeva, M.N. et al. Alkylation of p-substituted phenols by heteropoly acids. React Kinet Catal Lett 46, 17–23 (1992). https://doi.org/10.1007/BF02096672

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  • DOI: https://doi.org/10.1007/BF02096672

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