反应详情

Methyl 4-{[(2-{1-[5-(3,4-dichlorophenyl)-4-hydroxy-1-methyl-1H-pyrazol-3-yl]ethylidene}hydrazino)-carbonothioyl]amino}-2-nitrobenzoate (100 mg, 0.19 mmol) synthesized in Synthetic Example 104 was dissolved in methanol (3 ml), and 1 M sodium hydroxide aqueous solution (0.74 ml, 0.74 mmol) was added thereto, following by stirring overnight at room temperature. After completion of the stirring, 1 M hydrochloric acid (0.74 ml, 0.74 mmol) and water were added thereto. The precipitated solid was recovered by filtration, washed with water, isopropyl alcohol, and chloroform. The obtained solid was stirred in chloroform, and then filtered to obtain 37 mg of the desired product as a yellow solid (yield 48%).

1. filtrationThe precipitated solid was recovered by filtration
2. washwashed with water, isopropyl alcohol, and chloroform
3. stirringThe obtained solid was stirred in chloroform
4. filtrationfiltered