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Published on: June 21, 2017
Direct Amination of Anilines Utilizing Dearomatized Phenolate Species
Shaofeng Wu1, Haitao Li1, Shicheng Dong2
1State Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Urumqi Key Laboratory of Green Catalysis and Synthesis Technology, College of Chemistry, Xinjiang University, Urumqi 830017, China.
Directly aminating anilines is now possible using hypervalent iodine to create transient intermediates. This method efficiently synthesizes bioactive p-alkylaminophenols for drug discovery and complex amine construction.
Area of Science:
- Organic Chemistry
- Synthetic Methodology
- Medicinal Chemistry
Background:
- Activation of the aryl C-N bond is a significant challenge in organic synthesis.
- Developing efficient methods for direct aniline amination is crucial for constructing nitrogen-containing compounds.
Purpose of the Study:
- To present a novel method for the direct amination of anilines.
- To enable selective C(aryl)-NH2 bond cleavage under mild conditions.
- To provide a modular platform for complex amine construction.
Main Methods:
- Utilizing hypervalent iodine to generate transient dearomatized phenolate intermediates.
- Employing mild reaction conditions for the amination process.
- Synthesizing a library of p-alkylaminophenols.
Main Results:
- Successful direct amination of anilines achieved.
- Selective C(aryl)-NH2 bond cleavage demonstrated.
- A library of bioactive p-alkylaminophenols synthesized in up to 85% yields within 3 hours.
Conclusions:
- The developed protocol offers a mild and efficient route for aniline amination.
- The method serves as a modular platform for late-stage drug diversification and mechanistic studies.
- This approach facilitates the construction of complex amines.
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