1: 3,5-bis(trifluoromethyl)phenyl 4-(dimethylamino)benzenesulfonate With para-fluorostyrene; CuCN*2LiCl; phenyl-magnesium chloride; tetra-(n-butyl)ammonium iodide; cobalt(II) 2,4-pentanedionate in tetrahydrofuran; N,N'-dimethyl-N,N'-propyleneurea T=-20 - 25°C; Inert atmosphere; 2: benzoyl chloride in tetrahydrofuran; N,N'-dimethyl-N,N'-propyleneurea T=-20 - 25°C; 2.5 h; Inert atmosphere;