1.1: ethanol; tetrahydrofuran / 2 h 2.1: hydrogen / 5 palladium on charcoal / dichloromethane; ethanol / 2068.65 Torr 3.1: N-bromosuccinmide / dichloromethane / 1 h / -10 - -8 °C 3.2: 0.33 h View Scheme

1.1: dibenzoyl peroxide; N-bromosuccinmide / 1,2-dichloro-ethane / 8 h / Reflux 2.1: ethanol; tetrahydrofuran / 2 h 3.1: hydrogen / 5 palladium on charcoal / dichloromethane; ethanol / 2068.65 Torr 4.1: N-bromosuccinmide / dichloromethane / 1 h / -10 - -8 °C 4.2: 0.33 h View Scheme

1.1: hydrogen / 5 palladium on charcoal / dichloromethane; ethanol / 2068.65 Torr 2.1: N-bromosuccinmide / dichloromethane / 1 h / -10 - -8 °C 2.2: 0.33 h View Scheme