Ammonium Chloride → HCID 71237304, compound

Participants

Reaction Steps

4-((1R,3S)-3-Methoxycyclohexylamino)-2-(methylthio)pyrimidine-5-carboxylic acid (1.1662 g, 3.92 mmol) and HATU (2.237 g, 5.88 mmol) were stirred in DMF (7.84 mL) for 5 min at room temperature, then ammonium chloride (1.049 g, 19.61 mmol) and DIEA (3.42 mL, 19.61 mmol) were added while stirring. The reaction was allowed to stir at room temperature for 1 h. The reaction mixture was poured into water (100 mL) and extracted with ethyl acetate (3×50 mL). The combined organic layers were washed with water (50 mL), brine (25 mL), dried over sodium sulfate, filtered, and concentrated. The residual DMF was removed by suspending the oily residue in 100 mL water and 100 mL hexanes. The biphasic suspension was stirred vigorously for 30 min, filtered and washed with hexanes to afford 4-((1R,3S)-3-methoxycyclohexylamino)-2-(methylthio)pyrimidine-5-carboxamide (1.1081 g, 3.74 mmol, 95% yield) as an off-white solid. MS (ESI) m/z 397.2 [M+1]+.

Provenance & Evidence