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Large PAHs with Small HOMO-LUMO Gaps
T.-A. Chen, R.-S. Liu*
National Tsing-Hua University, Hsinchu, Taiwan
19 August 2011 (online)
Bis(aryl)diynes undergo PtCl2-catalyzed two-fold aromatization followed by a DDQ oxidation to give polycyclic aromatic hydrocarbons (PAHs) 1-4 in excellent yield. Extended PAH 5 was prepared from the corresponding bis(aryl)diyne with the use of ICl to effect the aromatization.