[Cl:1][C:2]1[N:3]=[CH:4][C:5]([C:9]([O:11]C)=[O:10])=[N:6][C:7]=1[CH3:8].C([O-])([O-])=O.[K+].[K+]>O>[Cl:1][C:2]1[N:3]=[CH:4][C:5]([C:9]([OH:11])=[O:10])=[N:6][C:7]=1[CH3:8]A mixture of methyl 5-chloro-6-methyl-2-pyrazine carboxylate (0.16 g, 0.86 mmol), K2CO3 (0.31 g, 2.18 mmol) and H2O was stirred for 2 h at room temperature. The reaction was filtered and acidified (20% HCl), and the resulting solid collected to provide the title compound (0.057 g, 39% yield); m.p. 116°-117° C.
Loading…