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Updated: Apr 15, 2026

Protocol for the Synthesis of Ortho-trifluoromethoxylated Aniline Derivatives
Published on: January 19, 2016
Anilide formation from thioacids and perfluoroaryl azides.
Sheng Xie1, Ryo Fukumoto1, Olof Ramström1
1†Department of Chemistry, KTH-Royal Institute of Technology, Teknikringen 36, S-10044 Stockholm, Sweden.
A novel metal-free reaction efficiently forms anilides from perfluoroaryl azide and thioacid. This fast, high-yield method is chemoselective and functional-group tolerant, even in aqueous systems.
Area of Science:
- Organic Chemistry
- Synthetic Chemistry
Background:
- Anilide formation is crucial in synthesizing pharmaceuticals and materials.
- Existing methods often require metal catalysts, leading to purification challenges.
Purpose of the Study:
- To develop a metal-free synthetic route for anilide formation.
- To achieve a fast, efficient, and chemoselective transformation.
Main Methods:
- Reaction of perfluoroaryl azide with thioacid.
- Metal-free conditions.
- Exploration of various solvents and functional group tolerance.
Main Results:
- High yields and fast reaction kinetics observed.
- Excellent chemoselectivity demonstrated.
- Compatibility with diverse solvents, including aqueous buffers.
- Tolerance to a broad range of functional groups.
Conclusions:
- A robust and versatile metal-free method for anilide synthesis has been established.
- The reaction offers a clean and efficient alternative to metal-catalyzed processes.
- The method's applicability in aqueous media broadens its synthetic utility.
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