Magnesium catalyzed [3 + 3] heteroannulation of α-enolic dithioesters with MBH acetate: access to functionalized 3,4-dihydro-2H-thiopyrans

Organic & Biomolecular Chemistry, Год журнала: 2022, Номер 20(34), С. 6784 - 6798

Опубликована: Янв. 1, 2022

An efficient heteroannulation employing racemic Morita–Baylis–Hillman acetate and α-enolic dithioesters enabling the formation of dihydro-2 H -thiopyrans is reported.

Язык: Английский

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Unveiling the Mg(ii) promoted [3+2] cycloaddition reaction of mesitonitrile oxide to Baylis–Hilman adduct from the molecular electron density theory perspective

New Journal of Chemistry, Год журнала: 2022, Номер 47(5), С. 2495 - 2506

Опубликована: Дек. 30, 2022

The presence of Mg( ii ) cation does not substantially accelerate this low polar zw-type [3+2] cycloaddition reaction, but changes the facial diastereoselectivity. These reactions are completely ortho regioselective.

Язык: Английский

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NaOH/BEt₃ Catalyzed Regioselective Hydroboration of Epoxides to Secondary Alcohols

European Journal of Organic Chemistry, Год журнала: 2022, Номер 2022(35)

Опубликована: Авг. 23, 2022

Abstract A regioselective hydroboration/hydrolysis of epoxides with pinacolborane catalyzed by NaOH/BEt 3 was achieved. Glycidyl oxide, styrene oxide and adamantane epoxide underwent facile hydroboration/deprotection to provide secondary alcohols exclusive selectivity in good excellent yields. Moreover, the stereochemistry could also be well retained, corresponding were obtained high optical activity under alkaline catalysis. Significantly, this reaction, diverse functional groups can compatible, including hydrogenation‐sensitive groups, such as carbon‐carbon double bonds halogens.

Язык: Английский

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Deep removal impurities in the process of preparing high-purity magnesium by vacuum gasification

Journal of Magnesium and Alloys, Год журнала: 2024, Номер unknown

Опубликована: Дек. 1, 2024

Язык: Английский

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