反应详情

To (R)-1-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)propan-2-amine (CB61) (0.12 g, 0.32 mmol) and sodium bicarbonate (0.10 g, 1.2 mmol) in dichloromethane/water (2:1, 3.1 mL) in an ice bath was added triphosgene (0.052 g, 0.18 mmol). The reaction was quenched with few drops of water and diluted with dichloromethane. The reaction mixture was filtered through phase separator and concentrated. The residue was dissolved in acetonitrile (2 mL) and 1-(2-isopropyl-5-methylphenyl)thiourea (0.069 g, 0.33 mmol) and cesium carbonate (0.14 g, 0.42 mmol) were added in single portions. The reaction was stirred overnight at room temperature. Additional portions of 1-(2-isopropyl-5-methylphenyl)thiourea (0.070 g, 0.33 mmol) and cesium carbonate (0.070 g, 0.21 mmol) were added and the reaction was stirred overnight. Ethanol (4 mL), methyl 2-bromoacetate (0.10 mL, 0.96 mmol), and sodium acetate (0.079 g, 0.96 mmol) were added and the reaction was heated at 60° C. for 6 hours. The reaction was cooled and stirred at room temperature over the weekend. The reaction was diluted with water and extracted with ethyl acetate (2×). The organic layers were dried with sodium sulfate, filtered, 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 (0.039 g, 19%).

1. customThe reaction was quenched with few drops of water
2. additiondiluted with dichloromethane
3. filtrationThe reaction mixture was filtered through phase separator
4. concentrationconcentrated
5. dissolutionThe residue was dissolved in acetonitrile (2 mL)
6. stirringthe reaction was stirred overnight
7. temperaturethe reaction was heated at 60° C. for 6 hours
8. temperatureThe reaction was cooled
9. stirringstirred at room temperature over the weekend
10. extractionextracted with ethyl acetate (2×)
11. dry with materialThe organic layers were dried with sodium sulfate
12. filtrationfiltered
13. concentrationconcentrated
14. customPurification by flash column chromatography