Microwave-assisted Pd-catalyzed B-N cross-coupling for efficient functionalization of the carbaborate [CB₁₁H₁₂]

Area of Science:

• Organometallic Chemistry
• Materials Science
• Carbaborate Chemistry

Background:

• Carbaborates are versatile boron clusters with unique electronic and structural properties.
• Developing efficient methods for functionalizing carbaborates is crucial for expanding their applications.
• Nitrogen-functionalized carbaborates offer potential in areas like catalysis and advanced materials.

Purpose of the Study:

• To develop a novel and efficient palladium-catalyzed method for B-N coupling.
• To synthesize nitrogen-functionalized carbaborate derivatives from readily available precursors.
• To explore the utility of the developed method for creating new materials.

Main Methods:

• Palladium-catalyzed cross-coupling reaction.
• Utilized [12-I-CB11H11]- as a key substrate.
• Coupling with a diverse range of amides and amines.

Main Results:

• Achieved highly efficient B-N coupling under mild reaction conditions.
• Demonstrated broad substrate scope with amides and amines.
• Obtained high yields of nitrogen-functionalized carbaborate derivatives with minimal dehalogenation.

Conclusions:

• The developed Pd-catalyzed B-N coupling is a versatile and efficient method for synthesizing nitrogen-functionalized carbaborates.
• This methodology provides a valuable platform for the design and synthesis of novel carbaborate-based materials.
• The mild conditions and high yields make this approach attractive for various chemical applications.