1: 2-Chloro-5-pyridinecarboxylicacid ethylester With potassium carbonate; copper(l) iodide; palladium 10 on activated carbon; triphenylphosphine in ethylene glycol dimethyl ether; water 2: 2-methyl-but-3-yn-2-ol in ethylene glycol dimethyl ether; water T=80°C; 2.5 h;