1,2-Dibromopropane → (1Z)-1-[3-(2-ethyl-5-methylphenyl)-4-methyl-1,3-thiazolidin-2-ylidene]-3-[2-[4-[1-[4-(trifluoromethoxy)phenyl]-1,2,4-triazol-3-yl]phenyl]ethyl]urea

関与物質

反応手順

3-(4-(2-Isocyanatoethyl)phenyl)-1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazole (C34a)(0.16 g, 0.42 mmol), 1-(2-ethyl-5-methylphenyl)thiourea (CA41) (0.081 g, 0.42 mmol), and cesium carbonate (0.13 g, 0.39 mmol) in acetonitrile (1.9 mL) was stirred at room temperature for 3 hours. The reaction was diluted with butanone (2 mL) and potassium carbonate (0.12 g, 0.83 mmol) and 1,2-dibromopropane (0.090 mL, 0.83 mmol) were added. The reaction was heated to 60° for 6 hours. The reaction was diluted with water and extracted with dichloromethane (2×) and the organic layers were filtered through a phase separator and concentrated. Purification by flash column chromatography using 0-100% ethyl acetate/B, where B=1:1 dichloromethane/hexanes, as eluent provided the title compound as a yellow oil (0.034 g, 13%).

情報源と証拠