Influence of the steric hindrance of the aryl group of pentavalent triarylbismuth derivatives in ligand coupling reactions

Article abstract of DOI:10.1016/S0040-4020(98)01185-5

Tris(ortho-tolyl)bismuth dichloride derivatives react with nucleophiles under basic conditions to give good to high yields of the C-arylated substrates. Under the same conditions, trimesitylbismuth dichloride affords only poor yields of the C-mesitylated substrates. Similar influence of the substitution pattern of tris(ortho-tolyl)bismuth diacetate derivatives was observed in the copper-catalysed arylation of hydroxyl or amino groups.