反应条件
1.1: dihydrogen peroxide; acetic acid; NH4Br / water / 20 h / 20 °C 2.1: iodine; magnesium / tetrahydrofuran / 70 °C / Inert atmosphere; Reflux 2.2: 0 - 70 °C / Inert atmosphere 2.3: Inert atmosphere 3.1: AlCl3, aluminium chloride / ethanethiol / 17 h / 0 - 20 °C 3.2: Cooling with ice View Scheme