Ethyl Acetate → HCID 16783361, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of methyl 6-chloropyridine-3-carboxylate (0.75 g), N,N-diisopropyl-ethyl-amine (1.75 mL) and 2-methyl-1H-imidazole (0.58 g) in N-methylpyrrolidone (6 mL) is heated to 100° C. overnight. Additional 2-methyl-1H-imidazole (0.58 g) is added and the reaction continues at 100° C. for two days. Ethyl acetate is added and the mixture is washed with saturated ammonium chloride. The organic phase is dried over MgSO4 and concentrated in vacuo. The crude ester is dissolved in MeOH (4 mL) and KOH (1.5 g) in water (2 mL) is added and kept at room temperature for 2 h. The MeOH is removed in vacuo and the aqueous phase is acidified with 1N HCl and extracted with dichloromethane. The organic phase is dried over MgSO4 and concentrated to afford the title compound. LC (method 20): tR=0.51 min; Mass spectrum (APCI): m/z=204 [M+H]+.

Provenance & Evidence