TYLENOL® and ASPIRIN® as green promoters for ipso-hydroxylation of arylboronic acids

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We explored the most expedient pathway for phenolic compound preparation using a combination of arylboronic acids, a green oxidant (H2O2) and a catalytic amount of readily available medicinal materials (TYLENOL® and ASPIRIN®). The ayrlboronic acids were successfully transformed into the corresponding phenols in high yields under metal- and base-free aqueous aerobic conditions. We demonstrated that enhanced availability and sustainability are some advantages associated with the use of medicinal supports.

A facile hydroxylation of arylboronic acids mediated by sodium ascorbate

A mild and selective method for the synthesis of phenols has been described.

Biosynthesis, characterization and catalytic activity of an Ag/zeolite nanocomposite for base- and ligand-free oxidative hydroxylation of phenylboronic acid and reduction of a variety of dyes at room temperature

A green synthesis of an Ag/zeolite nanocomposite and its catalytic activity were investigated. Its catalytic efficiency remains unaltered even after several repeated cycles.

Photocatalytic hydroxylation of arylboronic acids using continuous flow reactors

Photocatalytic oxidation of mono- and di-substituted arylboronic acids to phenols has been investigated in a continuous flow LED photoreactor. In EtOH–H₂O, conversion was accelerated at 2 MPa; whereas reactions at 0.1 MPa led to 64% desymmetrisation.

Oxidation with air by ascorbate-driven quinone redox cycling

Ascorbate and catalytic amounts of menadione transform atmospheric oxygen into hydrogen peroxide which is able to carry out oxidation.