Abstract
They call this new compound infinitene: 12 benzene rings fused together to make a figure eight or an infinity symbol, depending on your point of view. The molecule was made at Nagoya University by Maciej Krzeszewski, Hideto Ito, and Kenichiro Itami, who are experts in building new carbon-based macromolecules with interesting structures (ChemRxiv 2021, DOI: 10.33774/chemrxiv-2021-pcwcc ). Looped polyaromatic compounds have fascinated chemists for years. As well as posing a synthetic challenge, these compounds can help researchers explore the limits of aromaticity. To synthesize the new molecule, the team took inspiration from the synthesis of kekulene, a planar ring of 12 fused benzene rings that chemists first made nearly 40 years ago ( Chem. Ber. 1983, DOI: 10.1002/cber.19831161021 ). The group also drew from a previous attempt to make infinitene ( Bull. Chem. Soc. Jpn. 2000, DOI: 10.1246/bcsj.73.185 ). That foundational work helped them make the compound, otherwise called cyclo[
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