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Published on: April 19, 2019
ipso-Halogenation of Arylsilanes Using a Carborane Sulfide Catalyst
Masanobu Ogikubo1, Koji Hirano1,2, Yuji Nishii1,2,3
1Department of Applied Chemistry, Graduate School of Engineering, The University of Osaka, Suita, Osaka 565-0871, Japan.
This study introduces a new method for ipso-halogenation of arylsilanes using a Carborane-SMe catalyst. This approach enables access to challenging substitution patterns with excellent functional group tolerance.
Area of Science:
- Organic Chemistry
- Catalysis
- Synthetic Methodology
Background:
- Conventional electrophilic halogenation often exhibits limited regioselectivity.
- Accessing unconventional substitution patterns in aromatic compounds is synthetically challenging.
Purpose of the Study:
- To develop a novel desilylative halogenation method for arylsilanes.
- To overcome the regioselectivity limitations of traditional halogenation techniques.
Main Methods:
- Utilized the Carborane-SMe catalyst for desilylative halogenation.
- Applied the method to various arylsilane substrates, including electron-deficient ones.
Main Results:
- Successfully achieved ipso-halogenation of arylsilanes.
- Demonstrated the method's applicability to robust silyl groups.
- Showcased mild reaction conditions with broad functional-group tolerance.
Conclusions:
- The Carborane-SMe catalyzed desilylative halogenation provides a versatile route to complex aromatic structures.
- This method expands synthetic possibilities beyond conventional electrophilic aromatic substitution.
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