Sulfuric Acid → p-Menthane-3,8-diol
Reaktionsgleichung
[CH3:1][C:2](=[CH:4][CH2:5][CH2:6][CH:7]([CH2:9][CH:10]=[O:11])[CH3:8])[CH3:3].S(=O)(=O)(O)[OH:13]>>[CH:7]1([CH3:8])[CH2:6][CH2:5][CH:4]([C:2]([OH:13])([CH3:3])[CH3:1])[CH:10]([OH:11])[CH2:9]1Komponenten
3
Versuchsvorschrift
Citronellal is treated with aqueous sulfuric acid solution of 5 weight % (hereinafter referring to wt. %) in concentration at room temperature to cause the ring closure of citronellal. Then, after the reaction product is extracted with ether or toluene, para-menthane-3,8-diol is obtained by distilling the extract under reduced pressures (J. Am. Chem. Soc., 75, 2367 (1953), examined Japanese Patent Publication 3-80138 and U.S. Pat. No. 5,298,250).
Aufarbeitung
- extractionThen, after the reaction product is extracted with ether or toluene
Quellen und Nachweise
- ORD-Eintrag
- ord-72534ecc8b2147f6ac983dfbd5066caf
- Quelldatensatz
- uspto-grants-1999_09
- Patentnummer
- US05959161
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