Synlett 2004(1): 187-191  
DOI: 10.1055/s-2003-44996
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© Georg Thieme Verlag Stuttgart · New York

Synthesis and Properties of Monosubstituted Ethynylcorannulenes

Carissa S. Jonesa, Eric Elliotta, Jay S. Siegel*a,b
a Department of Chemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA
b Organisch-chemisches Institut, Universität Zürich, Winterthurerstr. 190, Zürich 8057, Switzerland
Fax: +41(1)6356888; e-Mail: jss@oci.unizh.ch;
Further Information

Publication History

Received 5 October 2003
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.

1

Department of Chemistry, University of Oregon, Eugene, OR 97403-1253.

2

For correspondence use Zürich address.