The intramolecular palladium-catalyzed reaction of aryl bromides and triflates with arenes has been used for the preparation of polyarenes. The synthesis of benz[e]acephenantrylenes, corannulenes, and C60H30, a 'crushed fullerene', by using this methodology are presented. Mechanistic studies on the arylation step point to an electrophilic substitution reaction pathway.
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Echavarren et al. (2003) studied this question.