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Catalyst-Free Synthesis of 1,4-Dihydroquinolines and Pyrrolo[1,2-a]quinolines via Intermolecular [4+2]/[3+2] Radical Cyclization of N-Methylanilines with Alkynoates

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Intermolecular [4+2]/[3+2] radical annulation of N-methyl­anilines with alkynoates under metal- and photoredox-catalyst-free conditions provides a practical and efficient method to synthesize bioactive 1,4-dihydroquinolines and pyrrolo[1,2-a]quinolines in one pot in moderate… Click to show full abstract

Intermolecular [4+2]/[3+2] radical annulation of N-methyl­anilines with alkynoates under metal- and photoredox-catalyst-free conditions provides a practical and efficient method to synthesize bioactive 1,4-dihydroquinolines and pyrrolo[1,2-a]quinolines in one pot in moderate to high overall yields.

Keywords: intermolecular radical; free synthesis; dihydroquinolines pyrrolo; pyrrolo quinolines; catalyst free

Journal Title: Synthesis
Year Published: 2020

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