Method for preparing organic lactone by catalyzing and oxidizing organic ketone with carbon materials
A technology for catalytic oxidation and organic ketones, applied in organic chemistry, the formation/introduction of carboxylate groups, etc., can solve the problems of difficult recycling of catalysts, low catalyst activity and selectivity, and low efficiency, and achieve good industrial application prospects , The reaction process is mild and easy to control, and the effect of simple preparation
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Embodiment 1
[0021] 0.5 grams of graphene catalyst, 10 grams of cyclopentanone, 10 grams of benzaldehyde and 200 milliliters of 1,2-dichloroethane in the three-necked glass bottle successively, feed oxygen, and the flow rate of oxygen is 100 milliliters / minute, under stirring in After reacting at 40° C. for 3 hours, gas chromatography-mass spectrometry analysis results showed that the product was the target product valerolactone, and gas chromatography analysis results showed that the selectivity and yield of valerolactone were 100% and 98.4%, respectively. After the catalyst was recycled 10 times, the selectivity and yield of valerolactone were still 100% and 98.2%, respectively.
Embodiment 2
[0023] Add 0.2 grams of commercial multi-walled carbon nanotube catalyst, 10 grams of cyclohexanone, 20 grams of butyraldehyde and 200 milliliters of 1,2-dichloroethane in turn into a three-necked glass bottle, and feed oxygen at a flow rate of 200 milliliters / minute , after reacting at 80° C. under stirring for 1 hour, gas chromatography-mass spectrometry analysis results showed that the product was the target product caprolactone, and gas chromatography analysis results showed that the selectivity and yield of caprolactone were 100% and 100% respectively. 98.7%.
Embodiment 3
[0025] Add 0.8 grams of commercial activated carbon catalyst, 10 grams of 2-methylcyclohexanone, 40 grams of p-chlorobenzaldehyde and 200 milliliters of acetonitrile in the three-necked glass bottle successively, feed oxygen, and the oxygen flow rate is 400 milliliters / minute, under stirring in After reacting at 30 DEG C for 9 hours, gas chromatography-mass spectrometry analysis results showed that the product was the target product 2-methylcaprolactone, and gas chromatography analysis results showed that the selectivity and yield of 2-methylcaprolactone were both 99.5%.
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