Hydrochloric Acid → HCID 72360074, compound

Participants

Reaction Steps

Methyl 4-{[(2-{1-[5-(4-t-butylphenyl)-4-hydroxy-3-thienyl]ethylidene}hydrazino)carbonothioyl]amino}-2-chlorobenzoate (100 mg, 0.19 mmol) synthesized in Synthetic Example 100 was dissolved in isopropyl alcohol (1.9 ml), and 0.2 M sodium hydroxide aqueous solution (2.1 ml, 0.42 mmol) was added thereto, following by stirring overnight at room temperature, then at 45° C. for 1 day. Then 0.2 M sodium hydroxide aqueous solution (1.1 ml, 0.22 mmol) was added thereto, following by stirring at 45° C. for 5.5 hours. After completion of the stirring, 1 M hydrochloric acid (0.64 ml, 0.64 mmol) was added. The precipitated solid was filtered, and purified with a silica gel plate (chloroform/methanol=9/1) to obtain the desired product as a yellow solid (24 mg, yield 25%).

Provenance & Evidence