Hydrochloric Acid → HCID 72360079, compound

Participants

Reaction Steps

To methyl 4-[(2-{1-[5-(4-ethylphenyl)-4-hydroxy-1-methyl-1H-pyrazol-3-yl]ethylidene}hydrazino)carbonyl]benzoate (0.172 mmol, 72.4 mg), methanol (4 mL) was added, and 1 M aqueous sodium hydroxide (5 eq., 0.861 mL) was added at room temperature. After 10 minutes of stirring at room temperature and 2 hours of stirring at 60° C., the reactor was cooled to room temperature, and 1 M hydrochloric acid (5 eq., 0.861 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 (29.1 mg, yield 42%).

Provenance & Evidence