Английская Википедия:2,2'-Biphenol

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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.[1][2]

Файл:BiPhePhos.svg
BiPhePhos is representative diphosphite ligand derived from 2,2′-biphenol.

Synthesis

The chemical can be made by a hydrolysis reaction that opens the central ring 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. This species then undergoes debutylation.[3]

See also

References