2-Butanone, 4-[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]- → 4-(3,5-Di-t-butyl-4-hydroxyphenyl) butane-2-ol

Beteiligte Stoffe

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4-(3,5-di-t-butyl-4-hydroxyphenyl) butane-2-ol was prepared by catalytic hydrogenation of 84.8 grams of 4-(3,5-di-t-butyl-4-hydroxyphenyl) butane-2-one in 400 milliliters of ethanol solvent in the presence of 10 grams of copper chromite catalyst at 150° C, and 1000 pounds per square inch pressure in a one-liter autoclave. Reduction was complete in three hours. The catalyst was filtered off and the filtrate was evaporated. The residue was crystallized by the addition of hexane to yield 82.9 grams of a white solid product (97 percent yield) having a melting point between 64° and 66° C.

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