1: 1-bromo-3,5-dichloro-benzene With magnesium in tetrahydrofuran T=20°C; Reflux; 2: benzonitrile in tetrahydrofuran 48 h; Reflux; 3: With hydrogenchloride; water in tetrahydrofuran 4 h;

1: 3,5-dichlorophenylzinc bromide With CCl2CuLi2N in tetrahydrofuran T=-20 - 0°C; Negishi coupling reaction; Inert atmosphere; 2: benzoyl chloride in tetrahydrofuran T=-20 - 20°C; Negishi coupling reaction; 2 h; Inert atmosphere;

durch Eliminierung der Aminogruppe;

T=200°C;

T=200°C;