sodium hydroxide in methanol Heating;

1: 2-bromo acetyl bromide With poly(ethylene glycol) 3400; N-ethyl-N,N-diisopropylamine in dichloromethane T=20°C; 2: diphenylamine in dichloromethane T=20°C; 3: With sodium hydroxide in water T=60°C;

1: 120 - 130 °C 2: aqueous-alcoholic KOH-solution View Scheme

potassium hydroxide