Phenol → 4,4,4'4'-Tetra(3-isopropyl-4-hydroxyphenyl)bicyclohexene

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The same method as specified in Reference Example 1 was used, except that 236.8 g of 0-isopropyl phenol and 23.7 g of methanol were used instead of 209.4 g of phenol and 18.9 g of methanol, and that a solution made of 39.0 g of 4,4′-bicyclohexanon and 39.0 g of 0-isopropyl phenol dissolved in 15.8 g of methanol was used instead of a solution made of 24.2 g of 4,4′-bicyclohexanon and 24.2 g of phenol dissolved in 24.2 g of methanol, to achieve reaction, neutralization, crystallization and filtering to obtain 175.9 g of 4,4,4′4′-tetra(3-isopropyl-4-hydroxyphenyl)bicyclohexene as white solid (still wet with the solution).

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