反应详情

温度

50 °C

(R)-3-(4-Bromo-3-(bromomethyl)-5-methylphenoxy)tetrahydrofuran 35b (700 mg, 2 mmol) was dissolved in 15 mL of N,N-dimethylformamide, followed by addition of potassium acetate (197 mg, 2 mmol). The reaction solution was heated to 50° C. and stirred for 1 hour. The resulting solution was cooled down to room temperature, mixed with 100 mL of water and extracted with ethyl acetate (20 mL×2). The combined organic extracts were washed with saturated sodium chloride solution (30 mL), dried with anhydrous magnesium sulphate, and filtered. The filtrate was concentrated under reduced pressure to obtain the crude title compound (R)-2-bromo-3-methyl-5-((tetrahydrofuran-3-yl)oxy)benzyl acetate 35c (658 mg) as a yellow oil, which was used directly in the next step without further purification.

1. temperatureThe resulting solution was cooled down to room temperature
2. extractionextracted with ethyl acetate (20 mL×2)
3. washThe combined organic extracts were washed with saturated sodium chloride solution (30 mL)
4. dry with materialdried with anhydrous magnesium sulphate
5. filtrationfiltered
6. concentrationThe filtrate was concentrated under reduced pressure