bromine; acetic acid T=20°C; 2 h;

1: With diethylzinc; 1-tert-butyl-4,4,4-tris(dimethylamino)-2,2-bis[tris(dimethylamino)-phosphoranylidenamino]-2Λ54Λ5-catenadi(phosphazene) in hexane; N,N-dimethyl acetamide T=20°C; 24 h; Inert atmosphere; 2: With chloranil in hexane; N,N-dimethyl acetamide T=20°C; 20 h; Inert atmosphere;

1: anhydrous iron chloride; magnesium / 1,2-dichloro-ethane; tetrahydrofuran / 0.17 h / 20 °C / |Inert atmosphere 2: acetic acid; bromine / 2 h / 20 °C View Scheme

hydrogen iodide Heating;