1: 34 percent / m-chloroperbenzoic acid, 2,6-di-tert-butyl-4-methylphenol / 1,2-dichloro-ethane / 3.5 h / 90 - 100 °C 3: -20 °C View Scheme

1: 90 percent / CCl4 / 20 °C 2: 34 percent / m-chloroperbenzoic acid, 2,6-di-tert-butyl-4-methylphenol / 1,2-dichloro-ethane / 3.5 h / 90 - 100 °C 4: -20 °C View Scheme