Fused Polycyclic Nitrogen-Containing Heterocycles: IX. Oxidative Fusion of Imidazole Ring to 3-Benzoylquinoxalin-2-ones
摘要:
3-alpha-Chlorobenzyl- and 3-benzoylquinoxalin-2-ones react with benzylamine in DMSO to give intermediate 3-(alpha-benzyliminobenzylidene)quinoxalin-2-one which is capable of existing in several tautomeric forms. The subsequent oxidative cyclocondensation leads to imidazo[1,5-a]quinoxalin-4-one. This new procedure for building up iniidazo[1,5-a]quinoxalin-4-one system has been applied to the synthesis of various bis(irnidazo[1,5-a]quinoxalin-4-ones).
Fused Polycyclic Nitrogen-Containing Heterocycles: IX. Oxidative Fusion of Imidazole Ring to 3-Benzoylquinoxalin-2-ones
摘要:
3-alpha-Chlorobenzyl- and 3-benzoylquinoxalin-2-ones react with benzylamine in DMSO to give intermediate 3-(alpha-benzyliminobenzylidene)quinoxalin-2-one which is capable of existing in several tautomeric forms. The subsequent oxidative cyclocondensation leads to imidazo[1,5-a]quinoxalin-4-one. This new procedure for building up iniidazo[1,5-a]quinoxalin-4-one system has been applied to the synthesis of various bis(irnidazo[1,5-a]quinoxalin-4-ones).