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Updated: Dec 11, 2025

Protocol for the Synthesis of Ortho-trifluoromethoxylated Aniline Derivatives
Published on: January 19, 2016
Dehydroxylative Fluorination of Tertiary Alcohols
Wei Zhang1, Yu-Cheng Gu2, Jin-Hong Lin1
1Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.
Synthesizing tertiary C-F bonds is difficult. This study introduces an efficient dehydroxylative fluorination of tertiary alcohols using Selectfluor and a phosphine/diiodoalkane system, achieving moderate to high yields.
Area of Science:
- Organic Chemistry
- Fluorination Chemistry
- Synthetic Methodology
Background:
- The synthesis of organofluorine compounds is crucial in medicinal chemistry and materials science.
- Constructing tertiary carbon-fluorine (C-F) bonds is particularly challenging compared to primary and secondary C-F bonds.
- Existing fluorination methods often have limitations in scope and efficiency for tertiary substrates.
Purpose of the Study:
- To develop an efficient method for the dehydroxylative fluorination of tertiary alcohols.
- To overcome the challenges associated with forming tertiary C-F bonds.
- To explore a novel activation system for hydroxyl group transformation.
Main Methods:
- Utilized Selectfluor as the fluorinating agent.
- Employed a Ph2PCH2CH2PPh2/ICH2CH2I system for hydroxyl group activation.
- Investigated the reaction conditions for the dehydroxylative fluorination of tertiary alcohols.
Main Results:
- Achieved efficient dehydroxylative fluorination of tertiary alcohols.
- Obtained desired tertiary C-F bond products in moderate to high yields.
- Demonstrated rapid reaction kinetics despite apparent reagent incompatibility.
Conclusions:
- Presented a novel and efficient method for the synthesis of tertiary organofluorine compounds.
- The developed method expands the scope of fluorination reactions for alcohols.
- This work offers a new strategy for accessing challenging tertiary C-F bonds.
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