5-Pyrimidinecarboxamide, 4-amino-2-(ethylthio)-N-methoxy-N-methyl- → HCID 11722738, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 4-amino-2-ethylsulfanyl-pyrimidine-5-carboxylic acid methoxy-methylamide (400 mg, 1.65 mmol, Example 1) was dissolved in anhydrous tetrahydrofuran (6 mL) and cooled to −78° C. A solution of the freshly prepared 2-methoxyl-5-fluorophenyl lithium (˜5 equiv, prepared following the same procedure as described in Step A of Example 2) was added over 10–30 minutes and the orange colored reaction mixture was stirred at −78 to 0° C. for 1–3 hours until the complete consumption of the starting material. The resulting mixture was quenched with aqueous ammonium chloride solution, extracted with ethyl acetate (3×20 mL), washed with brine (2×10 mL), dried over sodium sulfate and evaporated in vacuo. The residue was purified on silica gel with 80/20→60/40 of hexane/ethyl acetate to give (4-amino-2-ethylsulfanyl-pyrimidin-5-yl)-(5-fluoro-2-methoxy-phenyl)-methanone as a white solid (277 mg). MS (M+H)+, 308.

Provenance & Evidence