2242 2006 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Angew. Chem. Int. Ed. 2006, 45, 2242–2245 quinoline moiety were observed,[20] as the attached chlorine atom arrested that ortho-cyclization mode. This method provides a powerful means of preparing all kinds of condensed polyaromatic compounds with predictable regiocontrol. For example, 1-chloro- and 1-bromophenanthrene were readily prepared from phosphonium salts 5 and 6, ...
