Hydrochloric Acid → HCID 136375770, compound

Participants

Reaction Conditions

Reaction Steps

To a mixture of 4-chloro-6-[(5-methylpyridin-3-yl)amino]-2-(methylsulfanyl)pyrimidine-5-carboxamide (Preparation Example 359) (194 mg) and DMF (5 mL), sodium acetate (257 mg) was added and stirred at 100° C. for 5 hours. After the reaction liquid was cooled, ethyl acetate and water were added, and the precipitated powder was collected by filtration and dried to give a light yellow solid. To a mixture of the solid, ethanol (5 mL), methanol (20 mL) and THF (5 mL), 1M aqueous sodium hydroxide (3 mL) was added and stirred at room temperature for 1 hour, at 60° C. for 1 hour, and at 80° C. for 1 hour. After the reaction liquid was cooled, 1M hydrochloric acid (3 mL) was added, and the reaction liquid was extracted with chloroform-isopropanol. Silica gel was added to the organic layer, and the solvent was distilled off, followed by purification by silica gel column chromatography (eluent; chloroform:methanol=100:0 to 20:1) to give a crude product. This crude product was washed with a small amount of methanol to give 4-[(5-methylpyridin-3-yl)amino]-2-(methylsulfanyl)-6-oxo-1,6-dihydropyrimidine-5-carboxamide (27 mg) as a yellow solid.

Provenance & Evidence