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Rhodium(III)-Catalyzed Three-Component Oxyamidation of Alkynes with CO2 Retention from Dioxazolones
Shunle Hu1, Lijuan Jv1, Ruijie Mi1
1Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Qingdao 266237, China.
This study introduces a new Rh(III)-catalyzed three-component reaction for synthesizing tetrasubstituted alkenes. The method efficiently uses carbon dioxide from dioxazolones, offering a sustainable approach to complex alkene synthesis.
Area of Science:
- Organic Chemistry
- Catalysis
- Sustainable Synthesis
Background:
- Alkyne oxyamidation is crucial for creating tetrasubstituted alkenes.
- Existing methods often generate stoichiometric waste.
Purpose of the Study:
- To develop a sustainable and efficient Rh(III)-catalyzed three-component oxyamidation protocol.
- To utilize carbon dioxide from dioxazolones, minimizing waste.
Main Methods:
- A Rh(III)-catalyzed three-component reaction was employed.
- Substrates included amine, dioxazolone, and indolyl alkyne.
Main Results:
- The reaction achieved 100% atom-economy and high Z-selectivity.
- It provided efficient access to densely functionalized tetrasubstituted alkene scaffolds.
- Broad functional group compatibility was observed.
Conclusions:
- The developed protocol offers a sustainable and atom-economical route to valuable alkene structures.
- This method avoids CO2 waste associated with traditional dioxazolone use.
- It enables efficient synthesis of complex molecules under mild conditions.
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