Published as part of the Cluster Synthesis of Materials
Abstract
Polycyclic conjugated hydrocarbons (PCHs) containing antiaromatic rings are of fundamental
and technical interest. [N]naphthylene is an intriguing family of PCHs consisting
of alternatingly fused naphthalenoids and antiaromatic cyclobutadienoids (CBDs). We
recently reported the first three regioisomers of the [N]naphthylene family, synthesized
by catalytic arene-norbornene annulation (CANAL) reaction followed by acidic aromatization.
We now report an iterative strategy for CANAL synthesis allowing us to synthesize
the forth regioisomer, edge-bent [3]naphthylene. The optoelectronic properties, local
paratropicity, and crystal packing of the edge-bent [3]naphthylene were studied and
compared with its closely related regioisomer, center-bent [3]naphthylene.
Key words
annulation - iterative synthesis - antiaromaticity - polycyclic conjugated hydrocarbons
- [3]naphthylene