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Multi-membered O,S-heterocyclesR 0691 Facile Synthesis of Fused Quinolines via Intramolecular Friedel—Crafts Acyla-

tion. — Eaton's reagent is used for the synthesis of novel pentacyclic quinone-fused compounds (II) via intramolecular Friedel—Crafts acylation. Other reagents like PPA, sulfuric acid or sole phosphorus pentoxide only give poor yields. — (LI, Y.; CHANG, M.-Q.; GAO, F.; GAO*, W.-T.; J. Chem. Res. 2008, 11, 640-641; Inst. Superfine Chem., Bohai Univ., Jinzhou 121000, Peop. Rep. China; Eng.) — H. Haber

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