反应详情

Into a 25-mL round-bottom flask, was placed a solution of 4-(1-(3-(2-(azetidin-3-yl)-4-methyl-1H-imidazol-5-yl)-4-methylbenzoyl)azetidin-3-yl)benzonitrile (compound 189.2, 80 mg, 0.19 mmol) in N,N-dimethylformamide (1 mL). Triethylamine (27 μL, 0.20 mmol) and acetic anhydride (19 μL, 0.20 mmol) were added to the reaction. The reaction mixture was stirred for 2 h at room temperature, then quenched with 10 mL of water. The aqueous phase was extracted with 3×3 mL of ethyl acetate and the combined organic extracts were concentrated under reduced pressure. The crude product (100 mg) was purified by Prep-HPLC with the following conditions (Prep-HPLC-020): Column, SunFire Prep C18 OBD Column, 5 μm, 19*150 mm; mobile phase, Water with 50 mmol NH4HCO3 and MeCN (28% MeCN up to 40% in 7 min, up to 100% in 2 min, down to 28% in 1 min); Detector, Waters 2489 255 and 220 nm. This resulted in 32.8 mg (37%) of the title compound a white solid. m/z (ES+) 454 (M+H)+.

1. customInto a 25-mL round-bottom flask, was placed
2. customquenched with 10 mL of water
3. extractionThe aqueous phase was extracted with 3×3 mL of ethyl acetate
4. concentrationthe combined organic extracts were concentrated under reduced pressure
5. customThe crude product (100 mg) was purified by Prep-HPLC with the following conditions (Prep-HPLC-020)
6. waitup to 100% in 2 min
7. waitdown to 28% in 1 min)