Pd-catalyzed efficient one-pot sequential cross-coupling reactions of aryl dihalides
Xiaoming Zhang1, Ailing Liu, Wanzhi Chen
1Department of Chemistry, Zhejiang University, Hangzhou 310028, PR China.
A novel palladium complex with N-heterocyclic carbene ligands efficiently catalyzes sequential coupling reactions. This method produces unsymmetrical arenes from aryl dihalides in high yields.
Area of Science:
- Organometallic Chemistry
- Catalysis
- Organic Synthesis
Background:
- Palladium-catalyzed cross-coupling reactions are fundamental in organic synthesis.
- Sequential coupling reactions enable the construction of complex molecules from simpler precursors.
- Unsymmetrical arenes are valuable building blocks in pharmaceuticals and materials science.
Purpose of the Study:
- To develop a novel palladium catalyst for efficient one-pot sequential cross-coupling reactions.
- To synthesize unsymmetrical arenes using aryl dihalides.
Main Methods:
- Utilized a palladium complex featuring N-heterocyclic carbene ligands.
- Performed one-pot sequential Heck/Suzuki, Heck/Heck, and Heck/Sonogashira coupling reactions.
- Employed aryl dihalides as starting materials.
Main Results:
- Achieved excellent yields of unsymmetrically substituted arenes.
- Demonstrated the versatility of the catalyst in various sequential coupling reactions.
- The one-pot approach simplifies synthetic procedures and reduces waste.
Conclusions:
- The developed palladium-N-heterocyclic carbene complex is a highly effective catalyst for one-pot sequential cross-coupling reactions.
- This methodology provides a streamlined route to valuable unsymmetrical arenes.
- The catalyst shows significant potential for applications in complex molecule synthesis.
More Related Videos
10:12Retropinacol/Cross-pinacol Coupling Reactions - A Catalytic Access to 1,2-Unsymmetrical Diols
Published on: April 4, 2014
19:58Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
Related Concept Videos
Cycloaddition Reactions: Overview
[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction
Aryldiazonium Salts to Azo Dyes: Diazo Coupling
Nucleophilic Aromatic Substitution: Elimination–Addition
Cycloaddition Reactions: MO Requirements for Thermal Activation
Vicinal Diols via Reductive Coupling of Aldehydes or Ketones: Pinacol Coupling Overview
![Mizoroki-Heck Cross-coupling Reactions Catalyzed by Dichloro{bis[1,1',1''-(phosphinetriyl)tripiperidine]}palladium Under Mild Reaction Conditions](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F51444.jpg&w=3840&q=50)