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Mizoroki-Heck Cross-coupling Reactions Catalyzed by Dichloro{bis[1,1',1''-(phosphinetriyl)tripiperidine]}palladium Under Mild Reaction Conditions
Published on: March 20, 2014
Titanocene-catalyzed multicomponent coupling approach to diarylethynyl methanes
Joseph B Gianino1, Brandon L Ashfeld
1Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA.
Titanocene dichloride (Cp(2)TiCl(2)) catalyzes a multicomponent coupling reaction. This method efficiently synthesizes diarylethynyl methanes, creating valuable all-carbon tertiary centers.
Area of Science:
- Organic Chemistry
- Organometallic Chemistry
- Catalysis
Background:
- Multicomponent reactions offer synthetic efficiency.
- Diarylethynyl methanes are important structural motifs.
- Titanocene complexes are versatile catalysts.
Purpose of the Study:
- To develop a novel titanocene-catalyzed multicomponent coupling reaction.
- To synthesize diarylethynyl methanes with all-carbon tertiary centers.
Main Methods:
- Utilizing titanocene dichloride (Cp(2)TiCl(2)) as a catalyst.
- Employing aryl aldehydes as key electrophilic components.
- Performing a multicomponent coupling strategy.
Main Results:
- Achieved synthesis of diarylethynyl methanes.
- Formation of all-carbon tertiary centers.
- Yields ranging from 55% to 99% were obtained.
Conclusions:
- The described method provides an efficient route to diarylethynyl methanes.
- Titanocene catalysis enables the formation of complex carbon structures.
- This coupling offers a valuable tool for organic synthesis.
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