Synthesis of Open-cage Fullerenes with 4-Alkynylphenyl Groups on the Rim of the Orifice

Abstract

<div><p>Alkynyl anilines react with a diketo open-cage fullerene derivative and expand the orifice size from 11- to 18-membered rings. Benzyl azide reacts with the terminal alkynyl group under Click conditions. Single crystal X-ray structure of the <i>C</i>_s symmetric bis-3-alkynylaniline derivative showed the formation of a head to tail dimer due to strong H-bonding and π-π interactions.</p> </div