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Updated: Mar 5, 2026

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Direct Approach to N-Substituted-2-Fluoroindoles by Sequential Construction of C-N Bonds from gem-Difluorostyrenes
Bin Zhang1, Xiaofei Zhang2, Jian Hao1
1Department of Chemistry, Innovative Drug Research Center, Shanghai University , Shangda Road 99, Shanghai 200436, China.
Abstract:
A mild and efficient synthesis of N-substituted-2-fluoroindole derivatives was achieved via Buchwald-Hartwig couplings and a sequential, base-promoted intramolecular nucleophilic reaction-β-fluorine elimination. By employing easily obtained gem-difluorostyrenes and primary arylamines, the scope, advantages, and limitations of this reaction were well investigated. Furthermore, this strategy distinguishes itself by high modularity, operational simplicity, and a wide substrate scope, giving rise to a broad array of 2-fluoroindole derivatives in moderate to excellent yields.
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