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Published on: August 5, 2016
Phenylborylene: direct spectroscopic characterization in inert gas matrices
1Lehrstuhl für Organische Chemie 2, Ruhr-Universität Bochum, Germany. holger.bettinger@rub.de
Journal of the American Chemical Society
|February 24, 2006
Summary
Photolysis of bisazidophenylborane creates phenylborylene, a boron(I) species. Further irradiation of phenylborylene forms benzoborirene through ortho-CH bond insertion, revealing new organoboron chemistry.
Area of Science:
- Organometallic Chemistry
- Photochemistry
- Boron Chemistry
Background:
- Subvalent boron species are reactive intermediates.
- Understanding their formation and reactivity is crucial for synthetic chemistry.
Purpose of the Study:
- To investigate the photolysis of bisazidophenylborane.
- To characterize the resulting phenylborylene species.
- To explore the subsequent reactions of phenylborylene.
Main Methods:
- Isolation of bisazidophenylborane in cryogenic matrices.
- Broad band irradiation techniques.
- Spectroscopic analysis for intermediate characterization.
Main Results:
- Photolysis yielded phenylborylene, a singlet ground state boron(I) species.
- Broad band irradiation of phenylborylene led to benzoborirene formation.
- Benzoborirene formed via insertion into an ortho-CH bond.
Conclusions:
- Bisazidophenylborane is a viable precursor for generating phenylborylene.
- Phenylborylene undergoes intramolecular C-H insertion to form benzoborirene.
- This study expands the known reactivity of subvalent organoboron compounds.
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