Acetonitrile → (1Z)-1-[3-(5-methyl-2-propan-2-ylphenyl)-4-oxo-1,3-thiazolidin-2-ylidene]-3-[2-[4-[1-[4-(trifluoromethoxy)phenyl]-1,2,4-triazol-3-yl]phenyl]propyl]urea

Participants

Reaction Steps

3-(4-(1-(4-(Trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)butanoyl azide (C42) (0.22 g, 0.52 mmol) in acetonitrile (2.6 mL) was heated at 80° C. for 2 hours. The reaction was cooled and 1-(2-isopropyl-5-methylphenyl)thiourea (0.12 g, 0.57 mmol) and cesium carbonate (0.20 g, 0.61 mmol) were added. The reaction was stirred at room temperature for 18 hours. Sodium acetate (0.093 g, 1.1 mmol), methyl 2-bromoacetate (0.07 mL, 0.78 mmol) and ethanol (2.6 mL) were added, and the reaction mixture was heated at 65° C. for 3 hours. The reaction was cooled, diluted with ethyl acetate, and washed with water. The aqueous layer was extracted once more with ethyl acetate. The combined organic layers were dried over anhydrous sodium sulfate, filtered, and concentrated. The crude material was loaded onto a Celite® cartridge and purified by flash column chromatography using 0-100% ethyl acetate/B, where B=1:1 dichloromethane/hexanes, as eluent to afford the title compound as an orange solid (0.12 g, 35%).

Provenance & Evidence