2-aminopyridine; copper(l) iodide; sodium methylate in diethylene glycol dimethyl ether T=100°C; Ullmann alkoxylation reaction; 24 h;

Multi-step reaction with 3 steps 1: sodium hydroxide / ethanol; water / 4 h / 0 - 20 °C2: sodium tetrahydroborate / methanol / 1 h / 0 °C3: sodium acetate; toluene-4-sulfonic acid hydrazide / tetrahydrofuran; water / Reflux