1.1: acetyl chloride / 1.5 h / |Reflux 2.1: N-bromosuccinmide; dibenzoyl peroxide / tetrachloromethane / 4 h / |Reflux 3.1: acetone; water / 12 h / |Reflux 4.1: lithium aluminium tetrahydride / tetrahydrofuran 5.1: sodium hydride / mineral oil; N,N-dimethyl-formamide / 0.33 h 5.2: 4 h / 20 °C View Scheme

1: acetyl chloride / 1.5 h / |Reflux 2: N-bromosuccinmide; dibenzoyl peroxide / tetrachloromethane / 4 h / |Reflux 3: acetone; water / 12 h / |Reflux 4: lithium aluminium tetrahydride / tetrahydrofuran View Scheme