反应详情

A solution of ethyl 2-bromoimidazo[5,1-b] thiazole-7-carboxylate (101 mg, 0.37 mmol) in dichloromethane (5 ml) was cooled to −50° C. A toluene solution of diisobutylaluminium hydride (1.01 M solution; 1.1 ml, 1.1 mmol) was then added dropwise to the cooled solution, and the mixture was stirred at the same temperature for 10 min. After the completion of the reaction, a saturated aqueous potassium sodium tartrate solution was added thereto, and the mixture was stirred at room temperature for one hr and was extracted with ethyl acetate (7 ml×3). The organic layer was washed with saturated brine and was dried over anhydrous sodium sulfate, and the solvent was removed by distillation under the reduced pressure to give 2-bromo-7-hydroxymethylimidazo[5,1-b]thiazole (85 mg, 99%) as a white solid.

1. customAfter the completion of the reaction
2. stirringthe mixture was stirred at room temperature for one hr
3. extractionwas extracted with ethyl acetate (7 ml×3)
4. washThe organic layer was washed with saturated brine
5. dry with materialwas dried over anhydrous sodium sulfate
6. customthe solvent was removed by distillation under the reduced pressure