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Aryne 1,2,3-Trifunctionalization with Aryl Allyl Sulfoxides
Yuanyuan Li1, Dachuan Qiu1, Rongrong Gu1
1School of Chemistry and Chemical Engineering, Chongqing University , 174 Shazheng Street, Chongqing 400030, P. R. China.
This study introduces a new method for aryne trisubstitution using aryl allyl sulfoxides, creating adjacent C-S, C-O, and C-C bonds on a benzene ring under mild conditions.
Area of Science:
- Organic Chemistry
- Synthetic Methodology
- Aryl Chemistry
Background:
- Aryne chemistry offers unique pathways for complex molecule synthesis.
- Developing efficient methods for regioselective functionalization of aromatic rings is crucial.
Purpose of the Study:
- To achieve 1,2,3-trisubstitution of arynes with aryl allyl sulfoxides.
- To establish a novel synthetic route for incorporating C-S, C-O, and C-C bonds adjacently on a benzene ring.
Main Methods:
- Reaction of arynes with aryl allyl sulfoxides.
- Mild reaction conditions.
- Preliminary mechanistic investigations.
Main Results:
- Successful 1,2,3-trisubstitution of arynes achieved.
- Formation of adjacent C-S, C-O, and C-C bonds demonstrated.
- Broad substrate scope observed.
Conclusions:
- A novel and efficient method for aryne functionalization has been developed.
- The reaction proceeds via a cascade mechanism involving formal [2+2] cycloaddition, S→O migration, and Claisen rearrangement.
- This methodology provides a versatile platform for constructing highly substituted aromatic compounds.
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