Water → HCID 86718390, compound

Participants

Reaction Steps

To a solution of 3-(4,6-bis(2,2,2-trifluoroethoxy)pyrimidin-2-yl)-1-(5-(trifluoromethyl)thiophen-2-yl)urea (1) (150 mg, 0.31 mmol) in anhydrous dimethyl formamide (DMF, 1.5 mL) at ambient temperature was added NaH (6.6 mg, 0.28 mmol, 60% dispersion in mineral oil). After stirring 20 minutes a solution of bromomethyl methyl ether (35 mg, 0.28 mmol) in anhydrous DMF (0.5 mL) was added. After 2.5 h the reaction was judged complete by TLC analysis. To the reaction was carefully added H2O (2 mL). The reaction was extracted with EtOAc (10 mL). The EtOAc solution was washed with H2O (3×7 mL) followed by brine (7 mL). The organics were dried (Na2SO4), filtered and evaporated to give crude product. The crude material was purified by silica gel chromatography (0 to 8% EtOAc in pet ether) to afford 3-(methoxymethyl)-3-(4,6-bis(2,2,2-trifluoro ethoxy)pyrimidin-2-yl)-1-(5-(trifluoromethyl)thiophen-2-yl)urea (4) as an off white solid (18 mg, 11%), mp 118-119° C.; 1H NMR (400 MHz, Acetone-d6) δ 11.84 (s, 1H), 7.41-7.28 (m, 1H), 6.66 (dd, J=4.1, 0.9 Hz, 1H), 6.18 (s, 1H), 5.54 (s, 2H), 5.02 (q, J=8.6 Hz, 4H), 3.27 (s, 3H); ESIMS m/z 527 ([M−H]+).

Provenance & Evidence