反应详情

1.70 g of methyl cis-3-hydroxymethylcyclohexanecarboxylate are dissolved in 20 ml of dichloromethane, 1.60 g of methoxymethyl chloride and 2.60 g of diisopropylamine are added and the mixture is stirred at room temperature for 15 h. 50 ml of saturated NH4Cl solution and 50 ml of water are added to the solution, and the organic phase is separated off. The aqueous phase is extracted with dichloromethane and the combined organic phases are dried over magnesium sulfate and concentrated. This gives 2.0 g of methyl cis-3-methoxymethoxymethylcyclohexanecarboxylate as a yellow oil. This is dissolved in 50 ml of diethyl ether, 350 mg of LiAlH4 are added and the mixture is stirred at room temperature. After 2 h at 0° C., 5 ml of ethyl acetate, 40 ml of methyl tert-butyl ether and 3 g of MgSO4 are added. 15 ml of 10N KOH are then added dropwise. The suspension is stirred for 3 h and filtered through Celite and the filtrate is concentrated, which gives 1.65 g of (cis-3-methoxymethoxymethylcyclohexyl)methanol as a colorless oil.

1. customthe organic phase is separated off
2. extractionThe aqueous phase is extracted with dichloromethane
3. dry with materialthe combined organic phases are dried over magnesium sulfate
4. concentrationconcentrated
5. dissolutionThis is dissolved in 50 ml of diethyl ether
6. addition350 mg of LiAlH4 are added
7. stirringthe mixture is stirred at room temperature
8. waitAfter 2 h at 0° C.
9. addition5 ml of ethyl acetate, 40 ml of methyl tert-butyl ether and 3 g of MgSO4 are added
10. addition15 ml of 10N KOH are then added dropwise
11. stirringThe suspension is stirred for 3 h
12. filtrationfiltered through Celite
13. concentrationthe filtrate is concentrated