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Ruthenium-Catalyzed Cycloisomerization of 2‑Alkynylanilides: Synthesis of 3‑Substituted Indoles by 1,2-Carbon Migration

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posted on 2017-05-24, 00:00 authored by Takuma Watanabe, Yuichiro Mutoh, Shinichi Saito
We developed ruthenium-catalyzed cycloisomerization of alkynylanilides that gave 3-substituted indoles in high yields. The reaction proceeded via the disubstituted vinylidene ruthenium complex that was formed by the 1,2-carbon migration.

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