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Updated: Dec 28, 2025

Protocol for the Synthesis of Ortho-trifluoromethoxylated Aniline Derivatives
Published on: January 19, 2016
Intermolecular Trifluoromethyl-Hydrazination of Alkenes Enabled by Organic Photoredox Catalysis
Peng Wang1, Songsong Zhu1, Dengfu Lu1
1School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, China.
Abstract:
A metal-free and redox-neutral trifluoromethyl-hydrazination method of alkenes is described. With a commercially available photocatalyst and low-cost reagents, both conjugated and isolated alkenes could be converted to β-trifluoromethyl hydrazines in good to excellent yields. The versatile hydrazine group can be either used for heterocycle synthesis or cleaved to afford a corresponding amine. Mechanistic studies suggested this reaction goes through a radical addition cascade pathway, featuring a fast and irreversible trifluoromethylation and a relatively slow radical hydrazination step.
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