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

Panova, V.; Ivanovskii, S. A.; Shetnev, Аnton; Chirkova, Zh. V.; Sudzilovskaya, T. N.; Filimonov, S. I.

doi:10.1007/s11172-020-2986-1

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Doi: 101134/s10703632210600491

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2021

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“…Under the reaction conditions, a predominant nucleophilic substitution at the N 2 atom of the pyrazole ring was observed. Subsequent reduction of the nitro derivative with tin(II) chloride and other reagents [22] in all cases gave N-hydroxyquinoxalines as the products of reductive cyclization. The obtained compounds showed the properties of potent and selective inhibitors of human monoamine oxidase [23].…”

Section: Doi: 101134/s1070363221060049mentioning

confidence: 99%

Synthesis and Photoluminescent Properties of 2-(3-Carboxymethylindazol-1-yl)anilines

et al. 2021

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A two-stage method for the preparation of 2-(3-carboxymethylindazol-1-yl)anilines using the N-arylation reaction of 3-carboxymethylindazoles with o-nitrohaloarenes and subsequent reduction of nitro-containing intermediates with tin(II) chloride was developed. The experimental results showed that the use of the synthesized compounds as fluorophores in the visible region of the spectrum is promising.

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Section: Doi: 101134/s1070363221060049mentioning

confidence: 99%