Beyond the Scholl reaction - one-step planarization and edge chlorination of nanographenes by mechanochemistry.

The edge chlorination of the benchmark nanographenes triphenylene and hexa- peri -hexabenzocoronene is conducted mechanochemically. This approach overcomes solubility limitations and eliminates the need for elaborate chlorination conditions. Additionally, the planarization of oligophenylenes and their edge-chlorination can be combined in a one-pot approach requiring as little as 60 minutes.