反应详情

A solution of 26.6 g. of diethyl malonate and 10 ml. of 1,2-dimethoxyethane is added to a suspension of 4.0 g. of sodium hydride in 1,2-dimethoxyethane under argon. A solution of 16.9 g. of 4-[14-(trimethylsilyl)tetradecylamino]benzoyl chloride hydrochloride in 1,2-dimethoxyethane is then added. The reaction mixture is refluxed for 4.5 hours, cooled, poured on ice, acidified, and extracted with ether. The ether solution is washed with water and saturated sodium chloride solution, dried with anhydrous sodium sulfate and evaporated to dryness. Addition of a small amount of ethanol to the residue gives a solid which is filtered and discarded. The ethanol filtrate is evaporated and the residue is recrystallized to yield the title product.

1. temperatureThe reaction mixture is refluxed for 4.5 hours
2. temperaturecooled
3. additionpoured on ice
4. extractionextracted with ether
5. washThe ether solution is washed with water and saturated sodium chloride solution
6. dry with materialdried with anhydrous sodium sulfate
7. customevaporated to dryness
8. additionAddition of a small amount of ethanol to the residue
9. customgives a solid which
10. filtrationis filtered
11. customThe ethanol filtrate is evaporated
12. customthe residue is recrystallized