1.1: hydrogenchloride / ethanol; water / 2 h / 30 °C / Reflux 2.1: bromine; acetic acid / 15 h / 20 - 110 °C 2.2: 2 h / pH 4 3.1: trichlorophosphate / 2 h / 117 °C / Cooling with ice View Scheme

1.1: hydrogenchloride / ethanol; water / 2 h / 30 °C / Reflux 2.1: bromine; acetic acid / 15 h / 20 - 110 °C 2.2: 2 h / pH 4 View Scheme

hydrogenchloride in ethanol; water T=30°C; 2 h; Reflux;