反应详情

DIPEA (154 mg, 1.2 mmol) was added to a stirred solution of [(5-phenyl-1H-pyrazole-3-carbonyl)-amino]-acetic acid (100 mg, 0.4 mmol) in DMF (2.0 mL) followed by HOBt (60 mg, 0.49 mmol) and EDCI.HCl (93 mg, 0.49 mmol). After 2 minutes of stirring, 4-(2-trifluoromethyl-phenoxy)-piperidine trifluoroacetate (167 mg, 0.49 mmol) (prepared according to Step 1 and 5 of the General Scheme) was added and stirring was continued at ambient temperature overnight. The reaction mixture was diluted with water, extracted with ethylacetate, washed with brine and concentrated to afford 111 mg (57.81% Yield) of 5-phenyl-1H-pyrazole-3-carboxylic acid {2-oxo-2-[4-(2-trifluoromethyl-phenoxy)-piperidin-1-yl]-ethyl}-amide. LC/MS [M+H]+: 473.17, 97.38%, 1H NMR (300 MHz, DMSO-d6): δ13.8 (m, 1H), 8.1 (bs, 1H), 7.9-7.3 (m, 8H), 7.2-7.0 (m, 2H), 4.9 (bs, 1H), 4.2 (m, 2H), 3.8-2.9 (m, 4H), 2.0-1.7 (m, 3H).

1. additionwas added
2. stirringstirring
3. waitwas continued at ambient temperature overnight
4. extractionextracted with ethylacetate
5. washwashed with brine
6. concentrationconcentrated