反应详情

To a suspension of N-(4-{2-[4-(2-bromoethyl)phenyl]ethyl}-1,3-thiazol-2-yl)acetamide (353.3 mg, 1.000 mmol) in ethanol (4 ml) was added 1-acetyl-2-thiourea (177.4 mg, 1.501 mmol), and the mixture was heated under reflux for 7 hr. 1-Acetyl-2-thiourea (176.6 mg, 1.495 mmol) was added, and the mixture was heated under reflux for 17 hr. The mixture was cooled to room temperature, ethyl acetate (10 ml) was added, and the precipitated solid was filtered off. The filtrate was concentrated under reduced pressure, and purified twice by silica gel column chromatography (FUJI SILYSIA CHEMICAL LTD. DM-2035 21 g, ethyl acetate:hexane=2:3→1:1) to give N-(4-{2-[4-(2-sulfanylethyl)phenyl]ethyl}-1,3-thiazol-2-yl)acetamide (210.4 mg, 0.687 mmol, 68.7%) as a white solid.

1. temperaturethe mixture was heated
2. temperatureunder reflux for 7 hr
3. temperaturethe mixture was heated
4. temperatureunder reflux for 17 hr
5. filtrationthe precipitated solid was filtered off
6. concentrationThe filtrate was concentrated under reduced pressure
7. custompurified twice by silica gel column chromatography (FUJI SILYSIA CHEMICAL LTD. DM-2035 21 g, ethyl acetate:hexane=2:3→1:1)