4,4'-Dihydroxybiphenyl → 2,6-Di-tert-butylphenol

Participants

Reaction Steps

In the production of 3,3',5,5'-tetra-t-butylbiphenol, which is an intermediate of 4,4'biphenol, from 2,6-di-t-butylphenol as a starting material, the second process for producing 3,3',5,5'-tetra-t-butylbiphenol according to the present invention enables obtaining 3,3',5,5'-tetra-t-butylbiphenol in high yield with the full utilization of 2,6-di-t-butylphenol charged in the reaction vessel without detriment to the selectivity of 3,3',5,5'-tetra-t-butylbiphenol. Although the average degree of oxidation of 2,6-di-t-butylphenol is in the range of about 70 to 80 mol % in the conventional process for producing 3,3',5,5'-tetra-t-butylbiphenol, the degree of oxidation of 2,6-di-t-butylphenol can be as high as, for example, 95 mol % in the second process for producing 3,3',5,5'-tetra-t-butylbiphenol according to the present invention.

Provenance & Evidence