1: 5.60 g / sodium hydroxide / N,N-dimethyl-acetamide / 3 h / 50 °C 2: 287 mg / sodium hydroxide; water / N,N-dimethyl-acetamide / 1 h / Heating View Scheme

1.1: sodium hydroxide / 2 h / 50 - 60 °C 2.1: water / 1 h / Reflux 3.1: hydrogenchloride; sodium nitrite 3.2: 0 - 60 °C View Scheme