Synthesis and reactivity of some nitroaryl complex of HgII and AuIII synthesis of a substituted biphenyl by C-C coupling - Crystal structure of [Hg(C6H4NO2-3,OnBu-6)2]

Article abstract of DOI:10.1002/cber.19961291114

4-Butoxynitrobenzene reacts with [Hg(O₂CCF₃)₂] and LiCl to give [Hg(R)Cl] [R = C₆H₃NO₂-3,OnBu-6 (1)] which is symmetrized by Me₄NCl to give [HgR₂] (2), the crystal structure of which has been determined. The reaction of 2 with Me₄N[AuCl₄] affords Me₄NlAu(R)Cl₃] (3) by a facile transmetallation process. Complex 3 reacts with PPh₃ (1:1) to give cis-[Au(R)(PPh₃)Cl₂] (4). The diaryl complex [Au(C₆H₄N=N-Ph-2)(R)Cl] (5) is obtained by reaction of 3 with [Hg-(C₆H₄N=NPh-2)₂] through a second transmelallation reaction. Complex 5 and PPh₃ (1:1) give [AuClPPh₃] and the C-C coupling biphenyl RC₆iH₄N=NPh-2 (6). VCH Verlagsgesellschaft mbH, 1996.