p-Toluenesulfonic acid → 2-Isopropyl-3,5-xylenol

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Reaction Steps

63 g of propylene are introduced into 244 g of 3,5-dimethylphenol and 22 g of p-toluene sulphonic acid at 120° C. Thereupon the mixture is stirred at this temperature for 3 h. The catalyst is removed by washing with sodium hydrogen carbonate solution. Then the mixture is fractionated. At boiling point 120° C (12 mm Hg) 57 g of 3,5-dimethyl-2-isopropylphenol are obtained.

Provenance & Evidence