反应详情

75 g (0.62M) of 4-n-propylpyridine and 28 g (0.73M) of sodium amide were added to 250 ml of xylene, and the mixture was heated under reflux for 10 hr. Water was added in small portions to the reaction mixture under ice cooling to decompose excess sodium amide, and the reaction mixture was extracted with ethyl acetate, dried over magnesium sulfate and then purified by column chromatography (dichloromethanemethanol 50:1→20:1). The yield was 33 g. (blackish purple solid)

1. temperaturethe mixture was heated
2. temperatureunder reflux for 10 hr
3. extractionthe reaction mixture was extracted with ethyl acetate
4. dry with materialdried over magnesium sulfate
5. custompurified by column chromatography (dichloromethanemethanol 50:1→20:1)