2,2′-Biphenol is an organic compound with the formula (C6H4OH)2. It is one of three symmetrical isomers of biphenol. A white solid, it is a precursor to diphosphite ligands that are used to support industrial hydroformylation catalysis.

Synthesis 2,2′-Biphenol can be made by hydrolysis of dibenzofuran. Alternatively, it can be produced from 2,4-di-tert-butylphenol in two steps. The first step entails oxidative coupling to give the 2,2′-biphenol with four tert-butyl substituents. Upon heating, this species then undergoes debutylation.

See also 1,1′-Bi-2-naphthol

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