1: 1-bromo-3,5-dimethyl-benzene With magnesium; lithium chloride in tetrahydrofuran T=20°C; 2 h; Inert atmosphere; 2: With iron (III) acetylacetonate in tetrahydrofuran T=0°C; 0.0833333 h; Inert atmosphere; 3: ethylene,methyl acetate in tetrahydrofuran T=0°C; 0.75 h; Inert atmosphere;

1: 1-bromo-3,5-dimethyl-benzene With magnesium in tetrahydrofuran 2: allyl bromide in tetrahydrofuran 3: With ammonium chloride in water

tetrabutyl ammonium fluoride; Sn[N(SiMe3)2]2; bis-triphenylphosphine-palladium(II) chloride 1.) THF, r.t., 30 min, 2.) THF, DMF, 60 deg C, 20 h; Yield given. Multistep reaction;