反应详情

To a solution of 1.527 g (5.0 mmol) of 3-[4-(imidazo[1,2-a]pyridin-5-ylthio)butyl]oxazolidine-2,4-dione and 0.311 ml (5.0 mmol) of acetaldehyde in 20 ml of ethanol, 0.05 ml (0.5 mmol) of piperidine was added, followed by refluxing for 17 hours. After the reaction mixture was cooled, the solvent was distilled off. The residue was dissolved in dichloromethane, washed with water and dried, after which the solvent was distilled off. The residue was purified by column chromatography (eluent, n-hexane/ethyl acetate=3/1) to yield 77 mg (4.65%, yellow oily substance) of the desired product.

1. temperatureby refluxing for 17 hours
2. temperatureAfter the reaction mixture was cooled
3. distillationthe solvent was distilled off
4. dissolutionThe residue was dissolved in dichloromethane
5. washwashed with water
6. customdried
7. distillationafter which the solvent was distilled off
8. customThe residue was purified by column chromatography (eluent, n-hexane/ethyl acetate=3/1)