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Indanyl o-cresol has been obtained in high yield by the reaction of o-cresol with indene in the presence of p-toluenesulphonic acid as cata- lyst. The effects of variation of temperature, molar ratio of o-cresol to indene, time of reaction and amount of the catalyst have been inves- tigated on the reaction. The yield of the product increased with the increase of each of the above mentioned parameters. Optimum condi- tions of the reaction for the production of indanyl o-cresol were temperature, 130 O C; molar ratio of o-cresol to indene, 12:1; amount of cat- alyst, 8% by wt. of o-cresol; time of addition, 2h and time of stirring, 1h.

Indanylation of <i>o</i>-Cresol with Indene