N, N, N', N'-Tetrabromobenzene-1,3-disulfonamide and poly (N-bromo-N-ethylbenzene-1,3-disulfonamide) as new and efficient catalysts for the synthesis of highly substituted 1,6-dihydropyrazine-2,3-dicarbonitrile derivatives

Various mono and bis-1,6-dihydropyrazine-2,3-dicarbonitrile derivatives were efficiently synthesized by reacting 2,3-diaminomaleonitrile (DAMN), isocyanides and ketones in the presence of a catalytic amount of N, N, N ,N-tetrabromobenzene-1,3-disulfonamide [TBBDA] and poly(N-bromo-N-ethylbenzene-1,3...

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Bibliographic Details
Published in:Molecular diversity 2013-05, Vol.17 (2), p.251-259
Main Authors: Ghorbani-Vaghei, Ramin, Amiri, Mostafa, Karimi-Nami, Rahman, Toghraei-Semiromi, Zahra, Ghavidel, Mehdi
Format: Article
Language:English
Subjects:
Catalysis
Ethanol
Ketones - chemistry
Molecular Structure
Nitriles - chemical synthesis
Nitriles - chemistry
Pyrazines - chemical synthesis
Pyrazines - chemistry
Sulfanilamides - chemistry
Temperature
Water
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Summary:Various mono and bis-1,6-dihydropyrazine-2,3-dicarbonitrile derivatives were efficiently synthesized by reacting 2,3-diaminomaleonitrile (DAMN), isocyanides and ketones in the presence of a catalytic amount of N, N, N ,N-tetrabromobenzene-1,3-disulfonamide [TBBDA] and poly(N-bromo-N-ethylbenzene-1,3-disulfonamide) [PBBS] in EtOH/H2O at ambient temperature.
ISSN:1381-1991
1573-501X
DOI:10.1007/s11030-013-9427-0