Abstract

Haloperoxidases are ubiquitous enzymes which catalyze the incorporation of halogen or oxygen atoms into organic molecules at the expense of hydrogen peroxide. In this review, a brief overview is given of the use of these catalysts on laboratory and industrial scale. Selective halogenation seems to be confined to the chloroperoxidase from Pseudomonas pyrrocinia,whereas all other haloperoxidases produce hypohalous acid (HOX) in a controllable way, allowing the smooth (yet unselective) halogenation of electron-rich substrates. Furthermore, it has been shown recently that some haloperoxidases stereoselectively convert sulfides and alkenes into their corresponding homochiral oxides. Therefore, these enzymes are promising new tools for the organic chemist.

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