Recombinant whole-cell expression systems for Baeyer-Villiger monooxygenases of various bacterial origin were utilized in the regiodivergent biooxidation of cyclic terpenones enabling access to enantio- and regioisomeric lactones on preparative scale.

Keywords: Nucleophilic vinylic substitution (S N V) mechanism / Enol ethers / Alkoxymethylene compounds / Quinoxalines / Molecular calculationsTreatment of 6-aminoquinoxaline with β,β-diactivated alkoxymethylene derivatives gave the corresponding N-(quinoxalin-6-yl)enamines. A variant of the S N V reaction mechanism was proposed for substitution of the alkoxymethylene compounds, on the basis of the structures of the precursor

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Key indicatorsSingle-crystal X-ray study T = 293 K Mean (C-C) = 0.003 Å R factor = 0.038 wR factor = 0.105 Data-to-parameter ratio = 17.2 For details of how these key indicators were automatically derived from the article, see

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