反应详情

To a solution of methoxy-(3-trimethylsilanylethynyl-quinolin-6-yloxy)-acetic acid methyl ester (1.99 g) in ethanol (14 mL) was added a solution of sodium hydroxide 2N (4 mL) at 0° C. The reaction mixture was stirred at room temperature for 1 hour. Ethyl acetate and water were added. The mixture was stirred. The two layers were separated. The aqueous layer was acidified at pH 1 with HCl 2N. Then it was extracted with ethyl acetate (twice). The organic layer was dried over sodium sulphate, filtered and concentrated under reduced pressure to give (3-ethynyl-quinolin-6-yloxy)-metoxy-acetic acid (1.15 g) as an orange solid.

1. stirringThe mixture was stirred
2. customThe two layers were separated
3. extractionThen it was extracted with ethyl acetate (twice)
4. dry with materialThe organic layer was dried over sodium sulphate
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure