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Synthesis of substituted pyrazolo[1,5-a]quinoxalines using the reductive cyclization

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Abstract

New pyrazolo[1,5-a]quinoxalin-4-ones were obtained by reductive cyclization from the corresponding 1-(2-nitroaryl)pyrazole-5-carboxylates. Alternatively, pyrazolo[1,5-a]quinoxalines were prepared from N-hydroxypyrazolo[1,5-a]quinoxalines.

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Correspondence to V. A. Panova.

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Russian Chemical Bulletin, International Edition, Vol. 69, No. 10, pp. 1965–1970, October, 2020

Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 1965–1970, October, 2020.

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Panova, V.A., Ivanovskii, S.A., Shetnev, A.A. et al. Synthesis of substituted pyrazolo[1,5-a]quinoxalines using the reductive cyclization. Russ Chem Bull 69, 1965–1970 (2020). https://doi.org/10.1007/s11172-020-2986-1

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  • DOI: https://doi.org/10.1007/s11172-020-2986-1

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