1 h; Irradiation;

1: With KPF6; [Ru(II)(η6-benzene)(μ-Cl)Cl]2; sodium hydroxide in acetonitrile T=45°C; 48 h; Inert atmosphere; 2: With water; iodine in acetonitrile T=20°C; 48 h; Inert atmosphere;

1.1: magnesium sulfate / dichloromethane / 20 °C / Inert atmosphere 2.1: KPF6; [Ru(II)(η6-benzene)(μ-Cl)Cl]2; sodium hydroxide / acetonitrile / 48 h / 45 °C / Inert atmosphere 2.2: 48 h / 20 °C / Inert atmosphere View Scheme

1: 2-Bromo-3-iodothiophene With ethyl magnesium chloride in tetrahydrofuran T=0°C; Inert atmosphere; 2: N,N-dimethyl-formamide in tetrahydrofuran T=0°C; Inert atmosphere; 3: With water; ammonium chloride in tetrahydrofuran Inert atmosphere;

(i) nBuLi, (ii) /BRN= 605365/; Multistep reaction;