Synthesis of Regioselectively Functionalized Pyrenes via Transition-Metal-Catalyzed Electrocyclization

[摘要]：Transition-metal-catalyzed electrocyclic rearrangement of 2,6-diethynyl-1,1'-biphenyl precursors to form polysubstituted pyrenes is described. This method is useful for the preparation of pyrenes with uncommon substitution patterns, and selective integration of functional groups at the 1-, 2-, 3-, 5-, 7- and 9-positions is demonstrated.

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