反应详情

0.1 g of 10% palladium-carbon was added to a solution of 2.1 g of methyl 4-acetyl-1-methyl-3-cyclohexene-1-carboxylate (Example 34) in 50 ml of ethanol. The solution was reacted for 18 hours under normal-pressure hydrogen gas. After reaction, the catalyst was filtered out, and the solvent was removed in vacuo from the filtrate. The oily substance obtained was refined by vacuum distillation (Kugelrohl), yielding 2.1 g of methyl 4-acetyl-1-methyl-1-cyclohexanecarboxylate as a colorless oil, which had the following physiochemical properties:

1. customAfter reaction
2. filtrationthe catalyst was filtered out
3. customthe solvent was removed in vacuo from the filtrate
4. customThe oily substance obtained
5. distillationwas refined by vacuum distillation (Kugelrohl)