反应详情

1M aqueous sodium hydroxide (460 μL, 0.46 mmol) was added to a solution of 4-methoxycarbonyl-3-nitrobenzoic N′-(1-(1-(4-tert-butylphenyl)-3-methyl-5-oxo-1,5-dihydropyrazol-4-ylidene)-ethyl)-hydrazide (45.5 mg, 0.092 mmol) in methanol (1.5 mL) and the mixture was stirred at room temperature for 7 hours. After adding 1 M hydrochloric acid (460 μL, 0.46 mmol), the precipitate was filtered to give the title compound (24.3 mg, 55%) as a yellow solid.

1. filtrationthe precipitate was filtered