A suitable approach to the synthesis of 7-arylimidazo[1,2-a]pyrazin-8(7H)-ones starting from esters of oxalic acid monoamides via cyclization of intermediate 3-aminopyrazin-2-ones with α-halocarbonyl compounds has been suggested.
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Published in Khimiya Geterotsiklicheskikh Soedinenii, 2019, 55(4/5), 386–391
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Kovalenko, S.S., Drushlyak, O.G., Kovalenko, S.M. et al. Synthesis of 7-arylimidazo[1,2-a]pyrazin-8(7H)-one derivatives. Chem Heterocycl Comp 55, 386–391 (2019). https://doi.org/10.1007/s10593-019-02469-7
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DOI: https://doi.org/10.1007/s10593-019-02469-7