Synthesis of fluoranthenes by hydroarylation of alkynes catalyzed by gold(I) or gallium trichloride

This article is part of the Thematic Series "Gold catalysis for organic synthesis". Guest Editor: F. D. Toste © 2011 Pascual et al; licensee Beilstein-Institut. License and terms: see end of document. Electrophilic gold(I) catalyst 6 competes with GaCl3 as the catalyst of choice in the synthesis of fluoranthenes by intramolecular hydroarylation of alkynes. The potential of this catalyst for the preparation of polyarenes is illustrated by a synthesis of two func-tionalized decacyclenes in a one-pot transformation in which three C–C bonds are formed with high efficiency