Hydrochloric Acid → HCID 72359977, compound

Participants

Reaction Steps

To methyl 4-[(2-{1-[4-hydroxy-5-(4-isopropylphenyl)-1-methyl-1H-pyrazol-3-yl]ethylidene}hydrazino)-carbonyl]benzoate (0.037 mmol, 16.0 mg), methanol (3 mL) was added, and 1 M aqueous sodium hydroxide (5 eq., 0.184 mL) was added at room temperature. After 15 minutes of stirring at room temperature and 1.5 hours of stirring at 60° C., the reactor was cooled to room temperature, and 1 M hydrochloric acid (5 eq., 0.184 mL) and water were added. The precipitated solid was recovered by filtration, washed with water and dried by means of a vacuum pump, and the residue was further purified by silica gel thin layer chromatography (chloroform/methanol=10/1). After addition of chloroform/n-hexane, the precipitated solid was dried to give the desired product as a yellow solid (6.8 mg, yield 44%).

Provenance & Evidence