反应详情

A solution of 16.5 g of 3,3-diphenyl-2-propenyl bromide in 70 ml of acetone is added dropwise to a mixture of 7.5 g of 4-ethynyl-4-hydroxypiperidine, 8.5 g of anhydrous potassium carbonate and 75 ml of anhydrous acetone at room temperature over 45 minutes, then the reaction mixture is stirred at room temperature for one hour. After filtering off the inorganic salts the solution is evaporated under reduced pressure. The residue is taken up in benzene, washed with water, dried over anhydrous sodium sulfate and the solution is evaporated under reduced pressure. After recrystallizing the residue from acetonitrile the title product is obtained in 68.4% yield, m.p.: 122°-123° C.

1. filtrationAfter filtering off the inorganic salts the solution
2. customis evaporated under reduced pressure
3. washwashed with water
4. dry with materialdried over anhydrous sodium sulfate
5. customthe solution is evaporated under reduced pressure
6. customAfter recrystallizing the residue from acetonitrile the title product
7. customis obtained in 68.4% yield, m.p.: 122°-123° C.