1.1: n-butyllithium / tetrahydrofuran / 0.5 h / -100 °C / |Inert atmosphere 1.2: 2 h / -100 - 20 °C / |Inert atmosphere 2.1: palladium diacetate; N-acetyl-glycine; silver(I) acetate / 1,2-dichloro-ethane / 24 h / 90 °C / |Inert atmosphere View Scheme

1.1: n-butyllithium / tetrahydrofuran / 0.5 h / -100 °C / |Inert atmosphere 1.2: 2 h / -100 - 20 °C / |Inert atmosphere 2.1: palladium diacetate; N-acetyl-glycine; silver(I) acetate / 1,2-dichloro-ethane / 24 h / 90 °C / |Inert atmosphere View Scheme

1.1: n-butyllithium / tetrahydrofuran / 0.5 h / -100 °C / |Inert atmosphere 1.2: 2 h / -100 - 20 °C / |Inert atmosphere 2.1: palladium diacetate; N-acetyl-glycine; silver(I) acetate / 1,2-dichloro-ethane / 24 h / 90 °C / |Inert atmosphere View Scheme

1.1: n-butyllithium / tetrahydrofuran / 0.5 h / -100 °C / |Inert atmosphere 1.2: 2 h / -100 - 20 °C / |Inert atmosphere 2.1: palladium diacetate; N-acetyl-glycine; silver(I) acetate / 1,2-dichloro-ethane / 24 h / 90 °C / |Inert atmosphere View Scheme

1.1: n-butyllithium / tetrahydrofuran / 0.5 h / -100 °C / |Inert atmosphere 1.2: 2 h / -100 - 20 °C / |Inert atmosphere 2.1: palladium diacetate; N-acetyl-glycine; silver(I) acetate / 1,2-dichloro-ethane / 24 h / 90 °C / |Inert atmosphere View Scheme