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1 article(s) from Ondruš, Marek

Switchable highly regioselective synthesis of 3,4-dihydroquinoxalin-2(1H)ones from o-phenylenediamines and aroylpyruvates

Juraj Dobiaš,
Marek Ondruš,
Gabriela Addová and
Andrej Boháč

Beilstein J. Org. Chem. 2017, 13, 1350–1360, doi:10.3762/bjoc.13.132

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Scheme 1: The structures of quinoxalin-2(1H)-ones 1, 2 and 3,4-dihydroquinoxalin-2(1H)-ones 3. An acylmethyl ...

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Figure 1: The structures including some of their physical and biological properties of 3,4-dihydroqunoxalin-2...

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Scheme 2: Selective synthesis of both 3,4-dihydroquinoxalin-2(1H)-one regioisomers 16e (SYN) and 17e (ANTI).

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Scheme 3: The proposed mechanism for the synthesis of 3-methylquinoxalin-2(1H)-one regioisomers 22 and 23. In...

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Scheme 4: The regioselective syntheses of both quinoxalin-2(1H)-ones 27 (ANTI) and 26 (SYN).

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Scheme 5: The selective synthesis of substituted quinoxalin-2(1H)-ones 31 from 28 via three reaction steps.

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Scheme 6: Regioselectivity switching based on carbonyl activation of 4-chlorobenzoylpyruvates 12a,b by p-TsOH...

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Figure 2: The interactions and assignments, obtained after analyses of NMR spectra, allowed us to distinguish...

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Figure 3: NMR assignments for compound 16d.

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Figure 4: NMR assignments for compound 17d.

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Published 10 Jul 2017

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