The C60 polyarenes 4, 5, 18a, and 18b have been synthesized from truxene by triple alkylation at C5, C10, and C15 followed by a palladium-catalyzed intramolecular arylation. The synthesis of crushed fullerene C60H30 (2) is the most efficient reported to date and proceeds in 33% overall yield.
![Synthesis of C3 benzo[1,2-e:3,4-e':5,6-e'']tribenzo[l]acephenanthrylenes (crushed fullerene derivatives) by intramolecular palladium-catalyzed arylation](https://www.iciq.org/wp-content/uploads/2014/03/Synthesis-of-C3-benzo12-e34-e56-etribenzolacephenanthrylenes-crushed-fullerene-derivatives-by-intramolecular-palladium-catalyzed-arylation_eng_noticies_articles_2004_15.gif)