1999 alkylation, arylation, dealkylation, dearylation, C-acylation, olefination

alkylation, arylation, dealkylation, dearylation, C-acylation, olefinationO 0280

24 - 059Influence of the Steric Hindrance of the Aryl Group of PentavalentTriarylbismuth Derivatives in Ligand Coupling Reactions. — Base-promoted reaction of tris(ortho-tolyl)bismuth dichloride with nucleophiles leadsto C-arylated products in good yields. Starting from bulkier trimestitylbismuthdichloride low yields of C-arylated products are obtained. Similar results areobserved in the copper-induced arylation of hydroxyl and amino groups. —(FEDOROV, ALEXEY; COMBES, SEBASTIEN; FINET, JEAN-PIERRE;Tetrahedron 55 (1999) 5, 1341-1352; Lab. ”Chim., Biol. Radicaux Libres”, Fac.Sci. St. Jerome, CNRS, Univ. Aix-Marseille III, F-13397 Marseille, Fr.; EN)

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