ortho-Regioselective arylation of phenols: new general synthesis of ortho-hydroxyarylhydroquinone bis(methyl ethers)
Abstract
The ortho-regioselective synthesis of unsymmetrical hydroxylated biaryls is accomplished via metaltemplate arylation of different titanium and bromomagnesium phenolates with benzoquinone bis(dimethyl ketals). The results are interpreted in terms of the complex-induced proximity effect.