1: palladium diacetate; trifluorormethanesulfonic acid; N-bromosuccinmide / 1,2-dichloro-ethane / 6 h / 20 °C / |Sealed tube 2: hydrazine hydrate / 12 h / 20 °C / |Sealed tube View Scheme

1: N-chloro-succinimide; palladium diacetate; sodium pyrosulphate; trifluorormethanesulfonic acid / 1,2-dichloro-ethane / 0.17 h / 20 °C / |Sealed tube 2: palladium diacetate; trifluorormethanesulfonic acid; N-bromosuccinmide / 1,2-dichloro-ethane / 6 h / 20 °C / |Sealed tube 3: hydrazine hydrate / 12 h / 20 °C / |Sealed tube View Scheme

1: N-chloro-succinimide; palladium diacetate; trifluorormethanesulfonic acid / 1,2-dichloro-ethane / 11 h / 20 °C / |Sealed tube 2: palladium diacetate; trifluorormethanesulfonic acid; N-bromosuccinmide / 1,2-dichloro-ethane / 6 h / 20 °C / |Sealed tube 3: hydrazine hydrate / 12 h / 20 °C / |Sealed tube View Scheme

1: N-chloro-succinimide; palladium diacetate; trifluorormethanesulfonic acid / 1,2-dichloro-ethane / 14 h / 20 °C / |Sealed tube 2: hydrazine hydrate / 12 h / 20 °C / |Sealed tube View Scheme

1: potassium carbonate / acetonitrile / 2 h / |Reflux; |Sealed tube 2: N-chloro-succinimide; palladium diacetate; trifluorormethanesulfonic acid / 1,2-dichloro-ethane / 11 h / 20 °C / |Sealed tube 3: palladium diacetate; trifluorormethanesulfonic acid; N-bromosuccinmide / 1,2-dichloro-ethane / 6 h / 20 °C / |Sealed tube 4: hydrazine hydrate / 12 h / 20 °C / |Sealed tube View Scheme

sodium hydroxide; zinc