反应详情

To a solution of 17.0 ml of Vitride® T [sodium dihydrobis(2-methoxyethoxy)aluminate (70% solution in toluene)] in 50 ml of toluene, was added dropwise a solution of 5.0 g of 3,3-dimethylbutyl-2-thiophene carboxamide in 50 ml of dried tetrahydrofuran. The resulting mixture was heated at reflux for 2 hours, then cooled. The complex was decomposed by adding dropwise 30 ml of 2.5N sodium hydroxide. The mixture was stirred for one hour. The layers were separated and the organic layer was washed with brine, dried over anhydrous magnesium sulfate and filtered. The filtrate was evaporated in vacuo and gave a light brown liquid. Kugelrohr distillation (75° C./0.15 mm of mercury) gave 4.0 g (82% yield) of the desired product.

1. temperatureThe resulting mixture was heated
2. temperatureat reflux for 2 hours
3. temperaturecooled
4. customThe layers were separated
5. washthe organic layer was washed with brine
6. dry with materialdried over anhydrous magnesium sulfate
7. filtrationfiltered
8. customThe filtrate was evaporated in vacuo
9. customgave a light brown liquid
10. distillationKugelrohr distillation (75° C./0.15 mm of mercury)