Synthesis of Pyrido[1′,2′:1,2]imidazo[4,5-b]quinoxaline Derivatives from 2-Amino-3-chloroquinoxaline and Pyridines
Pyrido[1′,2′:1,2]imidazo[4,5-b]quinoxaline was synthesized from 2-amino-3-chloroquinoxaline and pyridine. 3-Substituted pyridoimidazoquinoxalines were obtained from pyridines substituted at 4-position. These pyridoimidazoquinoxalines showed intense greenish yellow fluorescence.