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Palladium‐catalyzed bicyclization of 1‐(2,2‐dibromovinyl)‐2‐alkenylbenzene with allenyl malonates has been achieved to afford a series of bicyclic compounds. The protocol involves intermolecular carbopalladation of allenes/cyclization/internal Heck reaction. Three C−C bonds and two rings are formed in one step.
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Zhou et al. (2024) studied this question.
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