反应详情

To a 1 liter autoclave which is fitted with heating means, cooling means and a stirrer are added 54 g of ethyl 3,5-dimethyl-cyclohexylideneacetate, 200 ml of absolute methanol and 3 g of Raney-nickel, which has been washed three times with absolute methanol. The mixture is hydrogenated at 100° C. under a hydrogen pressure of 40 atmospheres. The hydrogen uptake stops after 8 hours. The catalyst is filtered off, the filtrate is concentrated and the residue is distilled. There are obtained 52.3 g of ethyl 3,5-dimethyl-cyclohexylacetate.

1. customTo a 1 liter autoclave which is fitted with heating means
2. temperaturecooling means and a stirrer
3. washhas been washed three times with absolute methanol
4. customis hydrogenated at 100° C. under a hydrogen
5. filtrationThe catalyst is filtered off
6. concentrationthe filtrate is concentrated
7. distillationthe residue is distilled