反应详情

0.70 gram (7.0 mmols) of 3,5-dihydroxycyclopent-1-ene and 0.83 gram (10.5 mmols) of pyridine were dissolved in 20 milliliters of anhydrous tetrahydrofuran, after which a solution of 0.70 g (9.0 mmols) of acetic acid chloride in 6 milliliters of anhydrous tetrahydrofuran was added dropwise over a period of 15 hours at room temperature in a stream of dried nitrogen, using a syringe drive. After concentrating the solvent with a rotary evaporator, 20 milliliters of ethyl acetate was added, following which the reaction mixture was washed with dilute hydrochloric acid (5 ml × 2), saturated sodium bicarbonate solution (5 ml × 2) and saturated sodium chloride solution (5 ml × 2). The organic layer was then separated and dried with anhydrous sodium sulfate. On distilling off the solvent, 1.00 gram of a colorless oil substance was obtained.

1. concentrationAfter concentrating the solvent
2. customwith a rotary evaporator, 20 milliliters of ethyl acetate
3. additionwas added
4. washwas washed with dilute hydrochloric acid (5 ml × 2), saturated sodium bicarbonate solution (5 ml × 2) and saturated sodium chloride solution (5 ml × 2)
5. customThe organic layer was then separated
6. dry with materialdried with anhydrous sodium sulfate
7. distillationOn distilling off the solvent