反应详情

To a stirred solution of 4.50 g (27.95 mmol) of the product of Step B in 30 mL of acetone was added 4.64 g (33.54 mmol) of powdered potassium carbonate and the reaction mixture was stirred for 10 minutes. Methyl α-bromo-3,4-methylenedioxyphenylacetate (8.01 g; 29.35 mmol) was then added and the reaction mixture refluxed overnight. The reaction mixture was cooled, filtered, and the filtrate evaporated in vacuo, dried in a vacuum to afford 10.30 g (9.87 g theoretical) of the title compound which was used without purification in the next step.

1. temperaturethe reaction mixture refluxed overnight
2. temperatureThe reaction mixture was cooled
3. filtrationfiltered
4. customthe filtrate evaporated in vacuo
5. customdried in a vacuum