Cesium carbonate → 3-(6-methoxy-5-nitropyridin-3-yl)-N,N-dimethylprop-2-yn-1-amine

Participants

Reaction Conditions

Reaction Steps

To a solution of 5-bromo-2-methoxy-3-nitropyridine (1.50 g, 6.44 mmol) in DMF (30 mL) were added bis(acetonitrile)palladium (II) chloride (83.5 mg, 0.322 mmol), 2-dicyclohexylphosphino-2′,4′,6′-tri-1-propyl-1-1′-biphenyl (399 mg, 0.837 mmol), cesium carbonate (4.19 g, 12.9 mmol) and propargyl(dimethylamine) (0.832 mL, 7.72 mmol). The reaction mixture was flushed with nitrogen gas and allowed to stir for 4 h at 50° C. The reaction mixture was diluted with EtOAc and washed with brine, dried over Na2SO4, filtered and concentrated. The residue was purified by column chromatography to give 3-(6-methoxy-5-nitropyridin-3-yl)-N,N-dimethylprop-2-yn-1-amine (0.41 g, 27%) as a white solid. LCMS (FA): Rt=0.85 min, m/z=236.2 (M+H).

Provenance & Evidence