1: 4-bromo-pyridine-hydrochloride With sodium carbonate in water; toluene T=0 - 20°C; Suzuki Coupling; Inert atmosphere; 2: 3-formylphenyl-boronic acid With tetrakis(triphenylphosphine) palladium(0) in water; toluene T=85°C; Suzuki Coupling; 18 h; Inert atmosphere;

potassium carbonate; furancarbothioamide-based palladacycle in N,N-dimethyl acetamide; water T=100°C; Suzuki reaction; 2 h;

potassium carbonate; cesium fluoride; palladium in N,N-dimethyl acetamide; water T=210°C; Suzuki-Miyaura cross-coupling; microwave irradiation;