Selective Peroxygenase‐Catalysed Oxidation of Phenols to Hydroquinones

Abstract An enzymatic method for the selective hydroxylation of phenols using a peroxygenase from Aspergillus brasiliensis ( Abr UPO) is reported. A broad range of phenolic starting materials can be selectively transformed into the corresponding hydroquinones. Semi‐preparative syntheses of several hydroquinones were realised without further optimization pointing out the applicability of this enzyme as biocatalyst.