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DOI: 10.1055/s-2003-44996
Synthesis and Properties of Monosubstituted Ethynylcorannulenes
Publication History
Publication Date:
17 December 2003 (online)

Abstract
The solution-phase synthesis of corannulene has been modified and it is now possible to prepare multi gram quantities of corannulene more efficiently, with considerably less toxic reagents. Cross-coupling of bromocorannulene with TMS-acetylene and phenylacetylene affords novel ethynyl-containing corannulene derivatives. Deprotection of TMS-ethynyl corannulene affords the naked alkyne, which can be cross-coupled with pentafluoroiodobenzene and bromocorannulene to afford the appropriate alkyne derivatives. The photophysical properties of this new and novel family of alkyne-containing corannulene derivatives has been evaluated and all of the new derivatives exhibit low to moderate quantum efficiencies.
Key words
fullerene - corannulene - alkynes - PAH - cross-coupling
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