反应详情

温度

25 °C

A solution of 3-cyclopentyl-2-(4-morpholin-4-yl-phenyl)-propionic acid (202.5 mg, 0.67 mmol) in dry N,N-dimethylformamide (3.3 mL) was treated with N,N-diisopropylethylamine (350 μL, 2.00 mmol), O-benzotriazol-1-yl-N,N,N′,N′-tetramethyluronium hexafluorophosphate (303.8 mg, 0.80 mmol), and 2-aminothiazole (133.7 mg, 1.34 mmol). The reaction mixture was stirred at 25° C. under nitrogen for 15 h. The reaction mixture was then concentrated in vacuo to remove N,N-dimethylformamide. The residue was diluted with ethyl acetate (150 mL), and the organic phase was washed with a 10% aqueous hydrochloric acid solution (1×75 mL) and a saturated aqueous sodium chloride solution (1×75 mL). The organic layer was dried over sodium sulfate, filtered, and concentrated in vacuo. Flash chromatography (Merck Silica gel 60, 230-400 mesh, 1/1 hexanes/ethyl acetate) afforded 3-cyclopentyl-2-(4-morpholin-4-yl-phenyl)-N-thiazol-2-yl-propionamide (87.5 mg, 34%) as a white solid: mp 244-246° C.; EI-HRMS m/e calcd for C21H27N3O2S (M+) 385.1824, found 385.1832.

1. concentrationThe reaction mixture was then concentrated in vacuo
2. customto remove N,N-dimethylformamide
3. additionThe residue was diluted with ethyl acetate (150 mL)
4. washthe organic phase was washed with a 10% aqueous hydrochloric acid solution (1×75 mL)
5. dry with materialThe organic layer was dried over sodium sulfate
6. filtrationfiltered
7. concentrationconcentrated in vacuo