Half-substituted fluorocycloparaphenylenes with high symmetry: synthesis, properties and derivatization to densely substituted carbon nanorings.

Fluorinated cycloparaphenylenes (FCPPs) have attracted attention as electron-accepting CPPs as well as strained fluoroarenes. Herein, we report the synthesis and properties of novel FCPPs; F ₁₆ [8]CPP and F ₁₂ [6]CPP. Furthermore, the derivatization of F ₁₆ [8]CPP afforded a new carbon nanoring where sixteen pyrrole rings are densely substituted on the CPP framework.