Abstract
3-Benzoylquinoxalin-2(1H)-one is cyclized with acetic anhydride in the presence of pyridine into 2-oxo-4-phenylpyrano[2,3-b]quinoxaline.
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Mamedov, V.A., Kalinin, A.A., Gubaidullin, A.T. et al. 3-Benzoylquinoxalin-2(1H)-one in the Kostanecki-Robinson Reaction. Synthesis and Structure of 2-Oxo-4-phenylpyrano[2,3-b]quinoxaline. Chemistry of Heterocyclic Compounds 39, 96–100 (2003). https://doi.org/10.1023/A:1023028927007
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DOI: https://doi.org/10.1023/A:1023028927007