bromine in chloroform 24 h; Heating;

N-bromosuccinmide; silver nitrate in N,N-dimethyl-formamide T=20°C; 45 h; Inert atmosphereDarkness;

1: hydroxylamine hydrochloride; sodium sulfate; aq. HCl / 55 °C 2: 40 percent / conc. sulfuric acid / 55 - 80 °C 3: N-bromosuccinimide; 2,2'-azobisisobutyronitrile / 1,2-dichloro-ethane / 3.5 h / Heating View Scheme

1: hydroxylamine hydrochloride / Hydrolyse des entstandenen Amidins 2: sulfuric acid View Scheme

1: With sodium hydroxide; sodium chloride in water 0.5 h; 2: With sodium hydroxide; dihydrogen peroxide in water 1.5 h;