Summary
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1.
An investigation was made of the alkylation of m-cresol with butadiene in presence of zinc chloride deposited on alumina and of the cationite KU-1.
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2.
Alkylation led to the formation of 4- and 6-(2-butenyl)-m-cresols, of which the latter was cyclized to 2-ethyl-2,3-dihydro-6-methylbenzofuran and 2,7-dimethylchroman, the totalyield of which attained 50–60%
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3.
The addition of m-cresol to butadiene occurs in the 1,4-position.
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Viktorova, E.A., Shuikin, N.I. & Karakhanov, É.A. Heterogeneous-catalysis transformation of phenols. Russ Chem Bull 11, 1012–1013 (1962). https://doi.org/10.1007/BF00905224
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DOI: https://doi.org/10.1007/BF00905224