1: N-bromosuccinmide; [bis(acetoxy)iodo]benzene; palladium diacetate / 1,2-dichloro-ethane / 3.5 h / 70 °C / Inert atmosphere 2: N-iodo-succinimide; silver fluoride / tetrahydrofuran / 20 °C / Inert atmosphere; Darkness View Scheme

1.1: N-iodo-succinimide; [bis(acetoxy)iodo]benzene; palladium diacetate / 1,2-dichloro-ethane / 1.2 h / 70 °C / Inert atmosphere 2.1: hydrogen fluoride / tetrahydrofuran; water / 1 h / 20 °C 3.1: boron trifluoride diethyl etherate; 3-chloro-benzenecarboperoxoic acid / dichloromethane / 1 h / 20 °C 3.2: 0 - 20 °C 4.1: tetrabutyl ammonium fluoride / tetrahydrofuran; dichloromethane / 1 h / 20 °C View Scheme