40016-70-4Relevant articles and documents
Silica gel catalyzed synthesis of quinoxialine 1,4-dioxides under solvent-free conditions using microwave irradiation
Sumiyoshi, Yusuke,Saito, Hiroaki,Miyairi, Shinichi,Takabatake, Tohru
scheme or table, p. 905 - 909 (2009/09/29)
We report on the simple and quick synthesis of quinoxaline 1,4-dioxides in solvent-free conditions under microwave irradiation. Heating of various benzofuroxans and β-ketoesters or 1,3-diketones adsorbed on silica gel in a microwave oven for two minutes affords diverse biologically attractive quinoxaline 1,4-dioxides in high to excellent yields. Silica gel functions not only as support using microwave but also as catalyst and dehydration reagent.
Synthesis of new quinoxaline-2-carboxylate 1,4-dioxide derivatives as anti-Mycobacterium tuberculosis agents
Jaso, Andrés,Zarranz, Belén,Aldana, Ignacio,Monge, Antonio
, p. 2019 - 2025 (2007/10/03)
Twenty-nine new 6(7)-substituted quinoxaline-2-carboxylate 1,4-dioxide derivatives were synthesized and evaluated for in vitro antituberculosis activity. In general, the in vitro activity is significantly affected by substituents on the quinoxaline nucleu
The reactions of benzofuroxan with carbonyl compounds on the surface of solid catalysts
Takabatake,Hasegawa,Hasegawa
, p. 1477 - 1480 (2007/10/02)
The cyclocondensations of benzofuroxan 1a with carbonyl compounds were smoothly and efficiently carried out by the adsorption of the components on the surface of silica gel or a molecular sieve to form a 2,3-disubstituted quinoxaline 1,4-dioxide. When the