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Visible Light Photoredox Catalysis: Synthesis of Indazolo[2,3‑a]quinolines from 2‑(2-Nitrophenyl)-1,2,3,4-tetrahydroquinolines

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posted on 2013-09-20, 00:00 authored by Wen-Chung Lin, Ding-Yah Yang
The synthesis of indazolo[2,3-a]quinoline derivatives in moderate to good yields from 2-(2-nitrophenyl)-1,2,3,4-tetrahydroquinolines via visible light photoredox catalysis is reported. The reaction involves a novel ruthenium-catalyzed intramolecular formation of the N–N bond of the indazole ring.

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