反应详情

To a DMF (3 ml) solution of 1-(1-ethyl-5-methyl-1H-pyrazol-4-yl)ethanamine (95 mg, 0.62 mmol), (2,2,2-trifluoro-1,1-dimethylethyl)quinoline-6-carboxylic acid (176 mg, 0.62 mmol), HBTU (284 mg, 0.748 mmol) and triethylamine (0.434 ml, 3.12 mmol) were added and the mixture was stirred for 3 hours at room temperature. The reaction was quenched with sat. NaHCO3 aq and water, and the product was extracted with EtOAc/hexane (4:1) (3×20 ml). The combined organic extracts were dried over Na2SO4, and concentrated in vacuo. The crude material was purified by silica gel chromatography, using EtOAc/hexane (2:1) to give the title product (31 mg, 12%) as a white solid. 1H NMR (300 MHz, DMSO-d6) 1.27 (3H, t) 1.49 (3H, d), 1.71 (6H, s), 2.25 (3H, s), 4.01 (1H, q), 5.19 (1H, m), 7.44 (1H, s), 7.86 (1H, d), 8.06 (1H, d), 8.20 (1H, d), 8.51 (1H, d), 8.53 (1H, bs) 8.86 (1H, d). LCMS (ESI) RT=3.11 mins, m/z 417 (M−H)−, 419 (M+H)+.

1. customThe reaction was quenched with sat. NaHCO3 aq and water
2. extractionthe product was extracted with EtOAc/hexane (4:1) (3×20 ml)
3. dry with materialThe combined organic extracts were dried over Na2SO4
4. concentrationconcentrated in vacuo
5. customThe crude material was purified by silica gel chromatography