Methyl 6-chloropyridine-3-carboxylate → Methyl 6-(dimethylamino)pyridine-3-carboxylate

Participants

Reaction Steps

A solution of methyl 6-chloronicotinate (4.0 g, 23 mmol) in dimethylamine/MeOH (2 M, 80 mL, 160 mmol) in a pressure vessel was stirred at 95° C. for 2 h, cooled to rt and concentrated. The residue was dissolved in EtOAc (250 mL), washed with water (2×150 mL), dried over Na2SO4, and concentrated to afford the title compound as a tan solid (4.1 g, 98%). MS (ESI), (M+H)+ 181.24; 1H NMR (CDCl3) δ 8.79 (s, 1H), 7.99 (d, 1H, J=9.2), 6.45 (d, 1H, J=9.2), 3.85 (s, 3H), 3.15 (s, 6H).

Provenance & Evidence