Reaktionsgleichung
[C:1]([C:4]1[CH:13]=[CH:12][C:11]2[C:6](=[CH:7][CH:8]=[C:9]([CH3:14])[CH:10]=2)[CH:5]=1)(=[O:3])C.C(O)(=[O:17])C.O=O>[Cr].[Co].C([O-])(=O)C.[Mn+2].C([O-])(=O)C.O>[CH3:14][C:9]1[CH:10]=[C:11]2[C:6](=[CH:7][CH:8]=1)[CH:5]=[C:4]([C:1]([OH:3])=[O:17])[CH:13]=[CH:12]2Komponenten
Reaktionsbedingungen
- Temperatur
- 140 °C
Versuchsvorschrift
A Hastelloy C autoclave equipped with heater, stirrer, gas introduction tube, temperature sensor, pressure gauge and pressurized reflux condenser was charged with 100 g of 2-acetyl-6-methylnaphthalene, 380 g of acetic acid, 20 g of water and 15 g of manganese(II) acetate. Compressed air was passed, with stirring, through the solution at 140° C. and a pressure of 25 bar, with a gas escape rate of 3 liters per minute. The reaction was observed by continuously measuring the oxygen content in the exhaust gas. When this oxygen content returned to the initial level of 21% after a reaction time of 105 minutes, the air feed was shut off, the reaction mixture was cooled, with stirring, to room temperature, filtered, and the filter cake washed with 300 g of a 95 wt.-% solution of acetic acid. 70.3 g of 6-methyl-2-naphthoic acid (69.3% of the theory) was obtained, in a purity of 99.5%.
Aufarbeitung
- customafter a reaction time of 105 minutes
- temperaturethe reaction mixture was cooled
- stirringwith stirring, to room temperature
- filtrationfiltered
- washthe filter cake washed with 300 g of a 95 wt.-% solution of acetic acid
Quellen und Nachweise
- ORD-Eintrag
- ord-e23fbcdbda1948c7beb3352819fe23e4
- Quelldatensatz
- uspto-grants-1988_08
- Patentnummer
- US04764638
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