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A convenient route to internally phosphane-stabilized aryltriborane(7) compounds
Jun Li1, Constantin G Daniliuc, Gerald Kehr
1Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstr. 40, 48149 Münster, Germany. erker@uni-muenster.de.
Chemical Communications (Cambridge, England)
|October 26, 2018
Summary
New phosphane-containing triborane(7) derivatives were synthesized using aryllithium compounds and borane dimethyl sulfide. These compounds can be further functionalized, offering new avenues in organoboron chemistry.
Area of Science:
- Organometallic Chemistry
- Boron Chemistry
Background:
- Triborane(7) compounds are versatile boron clusters.
- Developing efficient synthetic routes for functionalized triboranes is crucial for exploring their properties.
Purpose of the Study:
- To synthesize novel biphenylene and phenylene derived triborane(7) derivatives.
- To investigate the reactivity of these triborane systems with fluorinated boron reagents.
Main Methods:
- In situ generation of aryllithium compounds.
- Reaction with borane dimethyl sulfide (BH3·SMe2).
- Spectroscopic characterization and X-ray diffraction analysis.
Main Results:
- Successful synthesis of phosphane-donor-containing triborane(7) derivatives.
- Demonstration of an internal donor group-assisted assembly procedure.
- Preparation of doubly C6F5 functionalized triborane derivatives via reaction with HB(C6F5)2.
Conclusions:
- The developed method provides facile access to functionalized aryl-triborane(7) systems.
- The phosphane donor group plays a key role in the assembly of these boron clusters.
- Further functionalization expands the scope of these organoboron compounds.
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