反应详情

The 4-hydroxymethyl-4-(3,4-dimethoxyphenyl)cyclohexanone is dissolved in 20 ml. of pyridine and 10 ml. of acetic anhydride. After about 20 hours of standing at room temperature, the mixture is poured into ice and water. The gum that precipitates is extracted with ether. The organic layer is washed successively with water, 2.5 N hydrochloric acid, water and brine, and evaporated to dryness to give 6.43 g. (57% yield) of 4-acetoxymethyl-4-(3,4-dimethoxyphenyl)cyclohexanone, as an amorphous gum.

1. customThe gum that precipitates
2. extractionis extracted with ether
3. washThe organic layer is washed successively with water, 2.5 N hydrochloric acid, water and brine
4. customevaporated to dryness
5. customto give 6.43 g