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Updated: Mar 29, 2026

Protocol for the Synthesis of Ortho-trifluoromethoxylated Aniline Derivatives
Published on: January 19, 2016
Catalytic electron donor-acceptor complex triggered cascade radical trifluoromethylation/cyclization of N-isopentenyl
Yangjian Cheng1, Guocheng Yin1, Changduo Pan2
1School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China. yujintao@cczu.edu.cn.
Abstract:
Photocatalytic trifluoromethylation/cyclization of N-isopentenyl aldehyde hydrazones triggered by a catalytic electron donor-acceptor (EDA) complex was developed for the construction of C5-trifluoromethylated tetrahydropyridazines. A catalytic amount of tris(4-bromophenyl)amine was used as the electron donor with trifluoromethyl thianthrenium triflate as the acceptor to generate a trifluoromethyl radical after irradiation. This environmentally benign methodology eliminates the need for a photocatalyst, offering a straightforward and efficient approach to accessing C5-trifluoromethylated tetrahydropyridazines.
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