反应详情

A solution of 5.0 g of (RS)-2-(2-buten-1-yl)-6-hydroxy-1-indanone, 4.1 ml of ethyl bromide, 6.83 g of potassium carbonate and 10 ml of N,N-dimethyl-formamide in 70 ml of acetone was heated to 35° for 35 hours. After cooling, the solution was poured into 100 ml of water and extracted twice with 100 ml of ethyl acetate each time. The combined organic phases were washed once with 70 ml of water and once with 70 ml of saturated sodium chloride solution, dried over magnesium sulfate and the solution was concentrated in a vacuum. 5.6 g (98%) of (RS)-2-(2-buten-1-yl)-6-ethoxy-1-indanone were obtained as a red-brown oil which was used directly in the next reaction.

1. temperatureAfter cooling
2. extractionextracted twice with 100 ml of ethyl acetate each time
3. washThe combined organic phases were washed once with 70 ml of water and once with 70 ml of saturated sodium chloride solution
4. dry with materialdried over magnesium sulfate
5. concentrationthe solution was concentrated in a vacuum