Phenyl- and Tolylthallium(III) Bis(trichloroacetate)s; Preparation and Reactions

Article abstract of DOI:10.1246/bcsj.53.553

Phenyl- and tolylthallium(III) bis(trichloroacetate)s were prepared from thallium(III) oxide, trichloroacetic acid, benzene, and toluene.The replacement of the thallium moiety in 1 with iodo, chloro, cyano, selenocyanato, and nitro groups and the aromatic coupling of 1 proceeded smoothly to give the corresponding aromatic derivatives in good yields.In the presence of PdCl2-NaOAc, 1 (Ar=phenyl) reacted with acrylonitrile and methacrylonitrile to afford cinnamonitriles (trans and cis) and a mixture of α-benzylacrylonitrile and β-phenylmethacrylonitriles (Z and E) respectively.