potassium hydroxide in methanol 0.0833333 h; Heating;

1: ethanol / 75 °C 2: aq. KOH / 50 °C View Scheme

1: KOH / ethanol / 4 h / 20 °C 2: 0.25 h / 170 °C 3: KOH / methanol / 0.08 h / Heating View Scheme

1: 0.25 h / 170 °C 2: KOH / methanol / 0.08 h / Heating View Scheme

1.1: Lawesson's reagent / ethylene glycol dimethyl ether / 12 h / 20 °C / |Inert atmosphere 2.1: potassium hydrogencarbonate; trifluoroacetic anhydride; 2,6-dimethylpyridine / ethylene glycol dimethyl ether / 0 - 20 °C 3.1: sodium hydroxide; water / ethanol / 0 - 20 °C 3.2: pH 2 View Scheme

T=220°C; 0.5 h;

oxalyl dichloride; N,N-dimethyl-formamide in dichloromethane T=20°C;