1: 2-(4-bromophenyl)acetic acid With 1,1'-carbonyldiimidazole in dichloromethane T=20°C; 0.25 h; 2: dimethylammonium chloride With triethylamine in dichloromethane 1 h;

oxalyl dichloride; N,N-dimethyl-formamide 1.) CH2Cl2, RT, 4 h; Yield given. Multistep reaction;

9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene; bis(dibenzylideneacetone)-palladium(0) in tetrahydrofuran; toluene T=65°C; Reformatsky Reaction; 16 h; Inert atmosphereSealed tube; chemoselective reaction;

tetrakis(triphenylphosphine) palladium(0) in toluene T=65°C; 20 h;

in dichloromethane