Methanol → Methyl hexyl cyclopentanone carboxylate
Reaktionsgleichung
[CH2:1]([CH:7]1[CH:11]([C:12]#N)[CH2:10][CH2:9][C:8]1=[O:14])[CH2:2][CH2:3][CH2:4][CH2:5][CH3:6].[OH2:15].C1(C)C=CC(S(O)(=O)=O)=CC=1.[CH3:27][OH:28]>>[CH2:1]([CH:7]1[C:8](=[O:14])[CH2:9][CH2:10][CH:11]1[C:12]([O:28][CH3:27])=[O:15])[CH2:2][CH2:3][CH2:4][CH2:5][CH3:6]Komponenten
Versuchsvorschrift
In a 100 ml round bottomed flask fitted with a mechanical stirrer and a reflux condenser, are placed 19.3 g 2-n-hexyl-3-cyanocyclopentanone, 3.2 g of methanol and 19 g of 2-n-hexyl-3-cyanocyclopentanone, 3.2 g of methanol and 19 g of p-toluene-sulfonic acid monohydrate. The reaction mixture is stirred at reflux temperature for 6 hours. The reaction mixture is then cooled to room temperature and poured into 200 ml of ice cold water. The organic layer is separated and the water phase is extracted with pentane. The combined organic layer and pentane extract are washed with sodium carbonate solution and water and dried over anhydrous sodium sulphate. The solvent is distilled off at atmospheric pressure and the residue is distilled through a short Vigreux column.
Aufarbeitung
- customIn a 100 ml round bottomed flask fitted with a mechanical stirrer and a reflux condenser
- temperatureat reflux temperature for 6 hours
- customThe organic layer is separated
- extractionthe water phase is extracted with pentane
- extractionThe combined organic layer and pentane extract
- washare washed with sodium carbonate solution and water
- dry with materialdried over anhydrous sodium sulphate
- distillationThe solvent is distilled off at atmospheric pressure
- distillationthe residue is distilled through a short Vigreux column
Quellen und Nachweise
- ORD-Eintrag
- ord-6ef6cf12622441aa9882e50ff01d12ef
- Quelldatensatz
- uspto-grants-1976_05
- Patentnummer
- US03954834
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