Lassagne, Frederic published the artcileSaccharin as an organocatalyst for quinoxalines and pyrido[2,3-b]pyrazines syntheses, COA of Formula: C12H8N2S, the main research area is arylenediamine dicarbonyl cyclocondensation saccharin organocatalyst; quinoxaline preparation catalyst solvent effect green chem; pyridopyrazine regioselective preparation regioisomer catalyst solvent effect green chem.
A room-temperature procedure using saccharin as catalyst was described for the cyclocondensation of different 1,2-arylenediamines with various 1,2-dicarbonyl compounds, yielding either quinoxalines or pyrido[2,3-b]pyrazines. The reactions proceed in very short reaction times in MeOH, and the target heterocycles were isolated in quant. yields after addition of water, filtration, and drying. Substituted pyrido[2,3-b]pyrazines can also be reached regioselectively by reacting α-keto aldehydes with 2,3-diaminopyridine.
Synthetic Communications published new progress about Aromatic diamines Role: RCT (Reactant), RACT (Reactant or Reagent). 40353-41-1 belongs to class quinoxaline, name is 2-(Thiophen-2-yl)quinoxaline, and the molecular formula is C12H8N2S, COA of Formula: C12H8N2S.
Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider