反应详情

6-Cyanonicotinic acid (500 mg) was dissolved in dichloromethane (25 ml), water-soluble carbodiimide (776 mg), methanol (0.164 ml) and 4-dimethylaminopyridine (49 mg) were added thereto, and the mixture was stirred for 2 hr 10 min. The reaction mixture was washed successively with saturated aqueous sodium hydrogen carbonate and saturated brine and dried over anhydrous sodium sulfate. The solvent was evaporated, and the obtained residue was purified by column chromatography (Yamazen HI-FLASH™ COLUMN size 2 L, elution solvent: hexane/ethyl acetate) to give the title compound. The same reactions were repeated using 6-cyanonicotinic acid (547 mg) to give the title compound (total 951 mg).

1. washThe reaction mixture was washed successively with saturated aqueous sodium hydrogen carbonate and saturated brine
2. dry with materialdried over anhydrous sodium sulfate
3. customThe solvent was evaporated
4. customthe obtained residue was purified by column chromatography (Yamazen HI-FLASH™ COLUMN size 2 L, elution solvent: hexane/ethyl acetate)