Journal
CHEMICAL COMMUNICATIONS
Volume 55, Issue 16, Pages 2332-2335Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9cc00270g
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Combined use of oxorhenium catalysts with triphenyl phosphite as an oxygen acceptor allowed efficient deoxygenative aromatization of oxabicyclic dienes. The reaction proceeded under neutral conditions and was compatible with various functional groups. Combining this deoxygenation with regioselective bromination and trapping of the generated aryne with furan resulted in benzannulative p-extension at the periphery of the PAHs. This enabled direct use of unfunctionalized PAHs for extension of p-conjugation. Iteration of the transformations increased the number of fused-benzene rings one at a time, which has the potential to alter the properties of PAHs by fine-tuning the degree of p-conjugation, shape, and edge topology.
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