反应详情

温度

-10 °C

To 700 ml of carbon disulfide containing 36.5 g (0.254 mole) of 4-chlorobutyryl chloride is added 74.5 g (0.56 mole) of aluminum chloride with stirring at -10° C. Stirring is continued for about 15 minutes at about 25° C. then the mixture is recooled to 5° C. and 48.4 g (0.294 mole) of ethyl α,α-dimethylphenylacetate in 100 ml of carbon disulfide is added. The reaction mixture is stirred on an ice bath for 31/2 hours then stirred to 151/2 hours at 25° C. then poured into HCl-ice water and extracted with chloroform. The extract is washed with dilute sodium carbonate solution, water and saturated sodium chloride solution, dried over magnesium sulfate, and evaporated giving as a solid ethyl 4-(4-chloro-1-oxobutyl)-α, α-dimethylphenylacetate.

1. stirringStirring
2. customis recooled to 5° C.
3. stirringThe reaction mixture is stirred on an ice bath for 31/2 hours
4. stirringthen stirred to 151/2 hours at 25° C.
5. extractionextracted with chloroform
6. washThe extract is washed with dilute sodium carbonate solution, water and saturated sodium chloride solution
7. dry with materialdried over magnesium sulfate
8. customevaporated