作者:Harald Bock、Stephanie Huet、Pierre Dechambenoit、Elizabeth A. Hillard、Fabien Durola
DOI:10.1002/ejoc.201403341
日期:2015.2
functionalization of chrysene by Friedel–Crafts acylation with ethyl chloroglyoxylate or by bromination followed by substituent exchange enables the formation of bis[5]helicene-tetracarboxylates and tetracarboxdiimides through Perkin reactions and palladium-catalyzed cyclizations. Tetrasubstituted bishelicenic dichrysenoanthracenes and dinaphthochrysenes are thus obtained fromchrysene in four to six steps