A Sydnone-Based Route to Indazolo[2,3-a]quinoxaline Derivatives

Manon Louis,Alex Talbot,Diana Lamaa,Antoine Sallustrau,Davide Audisio,Frederic Taran

SYNLETT（2022）

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摘要

A new synthetic route to indazolo[2,3-a]quinoxaline derivatives is described. The strategy is based on the 1,3-dipolar cycloaddition of arynes to quinoxaline-sydnone derivatives as a key step. The polyaromatic sydnones were prepared through a copper-promoted intramolecular cyclization of the C-4 position of sydnones on imines.

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关键词

sydnones, cycloaddition, quinoxalines, indazoloquinoxalines

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