Hidden Reactivity of Barbituric and Meldrum’s Acids: Atom-Efficient Free-Radical C-O Coupling with N -Hydroxy Compoundsстатья
Статья опубликована в журнале из списка Web of Science и/или Scopus
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Авторы:
Krylov I.B.,
Paveliev S.A.,
Budnikov A.S.,
Segida O.O.,
Merkulova V.M.,
Vil’ V.A.,
Nikishin G.I.,
Terent’ev A.O.
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Журнал:
SYNTHESIS-STUTTGART
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Том:
54
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Номер:
2
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Год издания:
2022
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Издательство:
Georg Thieme Verlag
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Местоположение издательства:
Germany
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Первая страница:
506
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Последняя страница:
516
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DOI:
10.1055/a-1643-7642
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Аннотация:
The reactivity of CH-acidic and structurally related enolcontaining heterocycles towards N-oxyl radicals is disclosed. Traditionally, these substrates have been considered as reactants for ionic transformations. Highly selective and efficient N-oxyl radical mediated C-O coupling of substituted barbituric or Meldrum’s acids with N-hydroxy compounds (N-hydroxyimides, hydroxamic acids, oximes, and N-hydroxybenzotriazole) was achieved using inexpensive manganese-containing salts as oxidants. Metal-free C-O coupling was demonstrated using diacetyliminoxyl as both the oxidant (hydrogen-atom acceptor) and the coupling partner. © 2021. Thieme. All rights reserved.
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Добавил в систему:
Малошицкая Ольга Александровна