反应详情

Methyl 4-{[(2-{1-[5-(4-t-butylphenyl)-4-hydroxy-3-thienyl]ethylidene}hydrazino)carbonothioyl]amino}-2-nitrobenzoate (95 mg, 0.18 mmol) synthesized in Synthetic Example 92 was dissolved in isopropyl alcohol (1.8 mL), and 0.2 M sodium hydroxide aqueous solution (2.0 mL, 0.40 mmol) was added thereto, followed by stirring overnight at room temperature. After completion of the stirring, 1 M hydrochloric acid (0.40 mL, 0.40 mmol) and water were added thereto, and the precipitated solid was filtered to obtain 57 mg of the desired product as a pale yellow solid (yield 61%).

1. filtrationthe precipitated solid was filtered