反应详情

Thiazole (30 μl) was dissolved in tetrahydrofuran (1 ml) to prepare a solution which was cooled under an argon atmosphere to −78° C. n-Butyllithium (1.56 M hexane solution) (260 μl) was added to the cooled solution, and the mixture was stirred for 2 hr. A solution (2 ml) of 2-(6,7-dimethoxy-quinolin-4-yloxy)-5-methoxy-benzaldehyde (compound 26) (138 mg) in tetrahydrofuran was then added to the reaction solution, and the mixture was stirred at −78° C. for one hr. A saturated ammonium chloride solution was added to the reaction solution, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was then washed with water and was dried over anhydrous sodium sulfate. The solvent was removed by distillation under the reduced pressure, and the residue was purified by column chromatography using acetone-hexane to give [2-(6,7-dimethoxy-quinolin-4-yloxy)-5-methoxy-phenyl]-thiazol-2-yl-methanol (90 mg, yield 52%).

1. customto prepare a solution which
2. additionwas added to the cooled solution
3. stirringthe mixture was stirred at −78° C. for one hr
4. extractionthe mixture was extracted with ethyl acetate
5. washThe ethyl acetate layer was then washed with water
6. dry with materialwas dried over anhydrous sodium sulfate
7. customThe solvent was removed by distillation under the reduced pressure
8. customthe residue was purified by column chromatography