Water → Ethyl 2-(4-(1,6-dihydro-6-oxopyrimidin-2-ylamino)-1h-pyrazol-1-yl)-2-methylpropanoate

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-(methylsulfanyl)pyrimidin-4(3H)-one (9.1 g) obtained in Step A of Example 347 in diglyme (60 mL) was added ethyl 2-(4-amino-1H-pyrazol-1-yl)-2-methylpropanoate (13 g) obtained in Step B of Example 347, and the mixture was stirred at 140° C. for 7 hr. To the reaction mixture was added water, and the mixture was extracted with ethyl acetate. The obtained organic layer was washed with water and saturated brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/methanol) to give the title compound (17 g).

Provenance & Evidence