Potassium Iodide → (4S)-4-[2-(Benzylsulfonyl)-4-cyanophenyl]-3,6-dimethyl-2-oxo-1-[3-(trifluoromethyl)phenyl]-1,2,3,4-tetrahydropyrimidine-5-carbonitrile

Participants

Reaction Conditions

Reaction Steps

The reaction was carried out under argon. Sodium 5-cyano-2-{(4S)-5-cyano-3,6-dimethyl-2-oxo-1-[3-(trifluoromethyl)phenyl]-1,2,3,4-tetrahydropyrimidin-4-yl}benzenesulfinate (150 mg, 101 μmol; purity 32%) was suspended in DMF (1 ml). Benzyl bromide (173 mg, 1.01 mmol; 10 eq.) was then added, and the mixture was heated in a closed tube at 110° C. for 24 h. Molecular sieve (4 Å), potassium iodide (110 mg, 0.66 mmol) and further benzyl bromide (173 mg, 1.01 mmol; 10 eq.) were then added, and the reaction mixture was again heated in a closed tube at 100° C. for 6 h. The mixture was then filtered, and the filtrate was concentrated under reduced pressure. The residue was purified by preparative HPLC (column: Gromsil C-18 10 μm; mobile phase: acetonitrile/water+0.1% TFA 10:90→90:10). The title compound was obtained as a solid (49.3 mg, 89% of theory).

Provenance & Evidence