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. 2023 Apr 20;79(6):723–751. doi: 10.1007/s00228-023-03486-4

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© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

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Scheme 6 — Reagents and conditions: a 1,2-ethanediol; b PhCO₃H; c i. CH₃MgBr; ii. Zn, H2SO4; d i. NaOH; ii. AcOH; and e microbiological dehydration