potassium hydroxide in ethanol 1.5 h; Ambient temperature;

1: PCl3 / benzene / 1 h 2: 48 percent / dimethylformamide; hexane / 1.5 h / 10 °C 3: 80 percent / KOH / aq. ethanol / 1.5 h / Ambient temperature View Scheme

1: 48 percent / dimethylformamide; hexane / 1.5 h / 10 °C 2: 80 percent / KOH / aq. ethanol / 1.5 h / Ambient temperature View Scheme