Journal
CHEM
Volume 4, Issue 11, Pages 2628-2643Publisher
CELL PRESS
DOI: 10.1016/j.chempr.2018.08.022
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Funding
- Natural Sciences and Engineering Research Council of Canada
- Canada Foundation for Innovation
- Canada Research Chairs program
- Israeli Ministry of Science, Technology, and Space
- Alberta Innovates - Technology Futures
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The synthesis of a pi-conjugated organophosphorus species with bridging P-P unit is reported. Because of the pyramidal geometry of the phosphorus centers, the molecular scaffold provides intriguing electronic communication throughout the three-dimensional structure via pi-sigma-pi conjugation in stepwise fashion. The dimeric species was serendipitously found to be accessible via a reaction of the corresponding P-amino-phosphole precursor through mediation with the hard Lewis acid BF3. We provide detailed mechanistic studies toward a suitable reaction mechanism that was also verified via computational means. Moreover, we elaborate the utility of the biphosphole via phosphorus functionalization that lends further proof for the step conjugation provided by the unique phosphorus-based molecular architecture.
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