1: 1.) ethylmagnesium bromide / 1) THF; 2) THF 2: manganese dioxide / CH2Cl2 3: 1,2-dichloro-benzene / 9 h / Heating 4: sodium acetate / ethanol / 2.5 h / Heating 5: 92 percent / H2 / Pd/C / ethyl acetate / 3 h 6: methanol; diethyl ether View Scheme

[MeCNAu((1,1′-biphenyl-2-yl)-di-tert-butylphosphine)]+SbF6− in dichloromethane T=18°C; 3 h; Inert atmosphere;

Au(Ph3P)+NTf2- in dichloromethane T=25°C; 0.25 h; regioselective reaction;

silver hexafluoroantimonate; [Au(PPh3)]Cl in dichloromethane T=23°C; 2 h;

[MeCNAu((1,1′-biphenyl-2-yl)-di-tert-butylphosphine)]+SbF6− in dichloromethane T=18°C; 3 h; Inert atmosphere;

platinum (II) chloride in toluene T=100°C; 15 h;