Ammonia → (rac)-4-{4-Cyano-2-[phenylsulfonyl]phenyl}-6-methyl-2-oxo-1-[3-(trifluoromethyl)phenyl]-1,2,3,4-tetrahydropyrimidine-5-carboxamide

Participants

Reaction Steps

The reaction was carried out under argon. (rac)-4-{4-Cyano-2-[phenylsulfonyl]phenyl}-6-methyl-2-oxo-1-[3-(trifluoromethyl)phenyl]-1,2,3,4-tetrahydropyrimidine-5-carboxylic acid (166 mg, 0.307 mmol) and HATU (5 eq., 583 mg, 1.53 mmol) were initially charged in dry DMF (3.5 ml) at 0° C., and ammonium chloride (5 eq., 82 mg, 1.53 mmol) [alternatively: 1.23 ml of a 0.5 M solution of ammonia in dioxane] and DIEA (10 eq., 369 mg, 3.07 mmol) were added after brief stirring (20 minutes). The mixture was stirred at RT for 6 h (HPLC control) and then concentrated under reduced pressure. The crude product was purified by preparative HPLC (column: Gromsil C-18; mobile phase: acetonitrile/water+0.1% TFA 10:90→90:10). This gave the title compound as a solid (147 mg, 89% of theory).

Provenance & Evidence