Acetone → 4-Methoxy-4-(methoxymethyl)cyclohexanone

Reaktionsgleichung

[CH3:1][O:2][C:3]1([CH2:13][O:14][CH3:15])[CH2:12][CH2:11][C:6]2(OCC[O:7]2)[CH2:5][CH2:4]1.CC(C)=O.O.CC1C=CC(S(O)(=O)=O)=CC=1>O>[CH3:1][O:2][C:3]1([CH2:13][O:14][CH3:15])[CH2:4][CH2:5][C:6](=[O:7])[CH2:11][CH2:12]1

Komponenten

Versuchsvorschrift

A mixture comprising 217 g (1.00 mol) 8-methoxy-8-(methoxymethyl)-1,4-dioxaspiro[4.5]decane (prepared according to intermediate example 16e), 1.7 L acetone, 0.86 L water and 30.5 g 4-methylbenzenesulfonic acid hydrate was stirred at 23° C. overnight. The acetone was removed, 0.5 L saturated aqueous sodium hydrogencarbonate added followed by 0.4 L brine. The mixture was extracted with ethyl acetate, the combined organic layers were washed with brine and dried over sodium sulfate. After filtration and removal of the solvent 180 g (max. 100%) of the title compound were obtained that was used without further purification.