1-Hydroxybenzotriazole → HCID 178488299, compound

Temperature

10 °C

HOBt (22 mg, 0.16 mmol) and DIPEA (66 mg, 0.51 mmol) were added to a stirred solution of 5-phenyl-1H-pyrazole-3-carboxylic acid hydrochloride (29 mg, 0.13 mmol) in DMF (1.0 mL). The mixture was then cooled to 10° C. and EDCI.HCl (30.5 mg, 0.16 mmol) followed by 2-amino-1-[4-(2-bromo-5-methoxy-benzoyl)-piperazin-1-yl]-ethanone hydrochloride (50 mg, 0.13 mmol) were added. The reaction mixture was then stirred at room temperature overnight. Water was added, and the resulting precipitate was isolated by filtration. The crude product was washed with hexane and diethyl ether to afford 5-phenyl-1H-pyrazole-3-carboxylic acid {2-[4-(2-bromo-5-methoxy-benzoyl)-piperazin-1-yl]-2-oxo-ethyl}-amide as a solid in 59% yield. LC-MS purity: 89.83%, 1H-NMR (DMSO): δ 8.62 (s, 1H), 8.08 (t, 1H), 7.8 (d, 2H), 7.58 (m, 1H), 7.5 (m, 2H), 7.4 (m, 1H), 7.1 (s, 1H), 7.0 (m, 2H), 4.2 (m, 2H), 3.8 (s, 3H), 3.75 (m, 2H), 3.6 (m, 2H), 3.55 (m, 2H), 3.2 (m, 2H).

1. additionwere added
2. customthe resulting precipitate was isolated by filtration
3. washThe crude product was washed with hexane and diethyl ether

ORD record

ord-8e9317010fda476faec5978f513c661d

Source dataset

uspto-grants-2010_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07842696B2