1-(3,4-Dichlorophenyl)-4,4,4-trifluorobutane-1,3-dione → 5-(3,4-Dichlorophenyl)-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-2-carboxylic acid

関与物質

反応手順

1-(3,4-Dichloro-phenyl)-4,4,4-trifluoro-butane-1,3-dione (1.00 g, 3.51 mmol) and 5-amino-1H-pyrazole-3-carboxylic acid (0.446 g, 3.51 mmoL) in acetic acid (100 mL) was heated at reflux for 48 hours. The reaction concentrated under reduced pressure and the crude product was purified by column chromatography on silica gel to give 5-(3,4-dichloro-phenyl)-7-trifluoromethyl-pyrazolo[1,5-a]pyrimidine-2-carboxylic acid (1.20 g, 90%).

情報源と証拠