A mixture of 3-chloro-5-(3,5-dimethyl-pyrazol-1-yl)-2-methoxymethyl-pyrazine (34 mg, 0.12 mmol), 4-chloroaniline (22 mg, 0.17 mmol) and cesium carbonate (80 mg, 0.24 mmol) in dry dioxane (2 mL) was degassed with argon for 15 minutes. Tris(dibenzylideneacetone)dipalladium (0) (3 mg, 0.003 mmol) and 1,1′-bis(diphenyl-phosphino) ferrocene (6 mg, 0.01 mmol) were added followed by degassing for 5 minutes and the reaction mixture was stirred at 120° C. over night. Dichloromethane was added and the solution was filtrated. The filtrate was concentrated in vacuo. Flash chromatography (ethyl acetate/heptane as eluent) gave (4-chloro-phenyl)-[6-(3,5-dimethyl-pyrazol-1-yl)-3-methoxymethyl-pyrazin-2-yl]-amine (33 mg, 80%) as a white solid.
