Cw. Kuo et Jm. Fang, Synthesis of xanthenes, indanes, and tetrahydronaphthalenes via intramolecular phenyl-carbonyl coupling reactions, SYN COMMUN, 31(6), 2001, pp. 877-892
Benzaldehydes and acetophenones bearing tethered carbonyl chains underwent
the intramolecular phenyl-carbonyl coupling reactions, by mediation of sama
rium diiodide and hexamethylphosphoramide, to afford the xanthenes and fuse
d benzocarbocyclic compounds containing carbonyl and hydroxyl substituents.