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A convenient synthesis of 1,4-dihydro-4-oxopyridazino[3,4-b]quinoxalines by a ring transformation of 1,2-diazepino[3,4-b]quinoxalines |
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| Authors: | Yoshihisa Kurasawa Ho Sik Kim Tae Kawano Ritsuko Katoh Atsushi Takada Yoshihisa Okamoto |
| Abstract: | The reaction of the 1,2-diazepino3,4-b]quinoxalines 2a,b or 3a,b with N-bromosuccinimide/water resulted in ring transformation to give the 1,4-dihydro-4-oxopyridazino3,4-b]quinoxalines 4a,b , respectively. |
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