1: 4,5-diiodo-2-tert-butylimidazole With potassium tert-butylate in tetrahydrofuran T=0°C; 1 h; Inert atmosphere; 2: methyl iodide in tetrahydrofuran T=0 - 20°C; Inert atmosphere;

1.1: potassium tert-butylate / tetrahydrofuran / 1 h / 0 °C / Inert atmosphere 1.2: 0 - 20 °C / Inert atmosphere 2.1: ethylmagnesium bromide / tetrahydrofuran; diethyl ether / 1 h / 0 °C / Inert atmosphere 2.2: 20 °C / Inert atmosphere View Scheme