1H-imidazole-2-carbaldehyde → (4-dipropylaminobutyl)-(4-{[(1H-imidazol-2-ylmethyl)amino]methyl}benzyl)carbamic Acid t-butyl Ester

Participants

Reaction Steps

The compound (0.78 g) obtained in Example 25-4 was dissolved in methanol (20 ml) and added with 2-imidazole carboxaldehyde (214.6 mg), followed by stirring at room temperature for 17 hours. After the solvent had been distilled off, the residue was dried under vacuum and then dissolved in methanol (15 ml) and then added with sodium borohydride (217.8 mg), followed by stirring at room temperature for 45 minutes. The reaction solution was added with a saturated aqueous ammonium chloride solution (10 ml) and stirred at room temperature for 15 minutes. Then, the reaction solution was added with saturated saline solution and extracted with chloroform, followed by drying with anhydrous sodium sulfate. After the solvent had been distilled off, the residue obtained was purified through silica gel column chromatography (chloroform/ethyl acetate), thereby obtaining the subject compound (1.01 g) as a yellow solid.

Provenance & Evidence