Abstract
Abstract Treatment with a cationic palladium(II) catalyst promoted the Friedel–Crafts-type cyclization of 1,1-difluoro-1-alkenes bearing a biphenyl skeleton to afford regioselectively fluorinated (pinpoint-fluorinated) phenanthrenes via C F bond activation. The obtained pinpoint-fluorinated phenanthrenes were observed to be organized by π–π and C H⋯F interactions to exhibit columnar and layer structures in the solid state.
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