1.1: triethylamine / acetonitrile / 2.33 h / 20 °C 2.1: caesium carbonate; N-ethyl-N,N-diisopropylamine; 1,2-bis-(diphenylphosphino)ethane; bis(η3-allyl-μ-chloropalladium(II)) / tetrahydrofuran / 8 h / |Inert atmosphere 3.1: 6 h / 0 °C 4.1: tetrahydrofuran / 0.08 h / 20 °C 4.2: -78 - 20 °C View Scheme

1.1: triethylamine / acetonitrile / 2.33 h / 20 °C 2.1: caesium carbonate; N-ethyl-N,N-diisopropylamine; 1,2-bis-(diphenylphosphino)ethane; bis(η3-allyl-μ-chloropalladium(II)) / tetrahydrofuran / 8 h / |Inert atmosphere 3.1: 6 h / 0 °C 4.1: tetrahydrofuran / 0.08 h / 20 °C 4.2: -78 - 20 °C 4.3: 20 h / 20 °C 5.1: hydrogen; palladium 10 on activated carbon / ethyl acetate / 18 h / 760.05 Torr View Scheme

1.1: triethylamine / acetonitrile / 2.33 h / 20 °C 2.1: caesium carbonate; N-ethyl-N,N-diisopropylamine; 1,2-bis-(diphenylphosphino)ethane; bis(η3-allyl-μ-chloropalladium(II)) / tetrahydrofuran / 8 h / |Inert atmosphere 3.1: 6 h / 0 °C 4.1: tetrahydrofuran / 0.08 h / 20 °C 4.2: -78 - 20 °C View Scheme

1.1: triethylamine / acetonitrile / 2.33 h / 20 °C 2.1: caesium carbonate; N-ethyl-N,N-diisopropylamine; 1,2-bis-(diphenylphosphino)ethane; bis(η3-allyl-μ-chloropalladium(II)) / tetrahydrofuran / 8 h / |Inert atmosphere 3.1: 6 h / 0 °C 4.1: tetrahydrofuran / 0.08 h / 20 °C 4.2: -78 - 20 °C 4.3: 20 h / 20 °C 5.1: hydrogen; palladium 10 on activated carbon / ethyl acetate / 18 h / 760.05 Torr View Scheme