反应详情

To methyl ethyl ketone solution (3 ml) of (3RS,4RS)-4-(4-hydroxyphenyl)-7-methoxymethyloxy-3-[4-(methoxymethyloxy)phenyl]-3-methyl-thiochroman (126 mg, 0.28 mmol) were added potassium carbonate (96 mg, 0.70 mmol) and 1-bromo-2-chloroethane (115 ml, 1.38 mmol), and the mixture was heated under refluxing for 70 hours. After adding water, the reaction solution was extracted with ethyl acetate. The extract was distilled under reduced pressure to remove the solvent and the crude product thus obtained was then purified using silica gel plate (ethyl acetate:hexane=1:2) to obtain 69 mg (yield: 48%) of the title compound.

1. temperaturethe mixture was heated
2. temperatureunder refluxing for 70 hours
3. extractionthe reaction solution was extracted with ethyl acetate
4. distillationThe extract was distilled under reduced pressure
5. customto remove the solvent
6. customthe crude product thus obtained
7. customwas then purified