Abstract:
(2R*,4R*)-2-Acetyl-2,6-diaryl-4-methyl-3,4-dihydropyrans (diastereoselectively synthesized from acetylene and ketones in one synthetic operation) undergo ring opening by aqueous NH4Cl (MeCN, 80°C, 8h) to afford diastereomerically pure 5-hydroxy-1,6-diketones in 48–89% yields.
Citation:
E. Yu. Schmidt, N. V. Semenova, I. A. Ushakov, A. V. Vashchenko, B. A. Trofimov, “Diastereoselective synthesis of 5-hydroxy-3-methylalkane-1,6-diones from ketones and acetylene in two atom-economic steps”, Mendeleev Commun., 29:1 (2019), 17–18
Linking options:
https://www.mathnet.ru/eng/mendc1406
https://www.mathnet.ru/eng/mendc/v29/i1/p17
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