1,8-Di(2-ethynylaryl)biphenylenes: Palladium-Catalyzed Intramolecular Cycloisomerization and Subsequent Thermal Rearrangement
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A cascade reaction for 1,8-dibromobiphenylene A with arylboronic acid B toward an unusual product C was comprehensively investigated. The initially formed Suzuki product D underwent an unprecedented palladium-catalyzed cycloisomerization, yielding E with a uni... ...
