Method for preparing aromatic ketone or aromatic aldehyde by selectively oxidizing alkyl arene
A technology of aromatic ketones and selectivity, applied in chemical instruments and methods, preparation of carbonyl compounds by oxidation, organic chemistry, etc., can solve the problems of poor atom economy, poor product selectivity, high reaction temperature, etc., and achieve high selectivity and low production cost , The effect of simple reaction system
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Embodiment 1
[0019] Example 1: Catalytic oxidation of indane
[0020] Dissolve 1ml (8.1mmol) of indane in 10ml of acetonitrile, add 0.20mmol of acriflavine, 0.24mmol of molecular bromine and 0.67mmol of N-hydroxyphthalimide, at 75°C, 0.3MPa of O 2 Under pressure, after reacting for 5 hours, analyze the reaction result with a gas chromatograph; the conversion rate of indane can reach 92%, and the selectivity of indan-1-one can reach 79%; at this time, it can be cooled, distilled, and the product can be collected.
Embodiment 2
[0021] Example 2: Catalytic oxidation of indane
[0022] Dissolve 1ml (8.1mmol) of indane in 10ml of methanol, add 0.01mmol of acriflavine, 0.08mmol of molecular bromine and 0.67mmol of N-hydroxyphthalimide, at 50°C, 0.3MPa of O 2 Under pressure, after reacting for 25 hours, analyze the reaction result with a gas chromatograph; the conversion rate of indan can reach 73%, and the selectivity of indan-1-one can reach 54%; at this time, it can be cooled and distilled to collect the product.
Embodiment 3
[0023] Example 3: Catalytic oxidation of indane
[0024] Dissolve 1ml (8.1mmol) indane in 10ml ethyl acetate, add 0.20mmol acridine, 0.24mmol molecular bromine and 0.08mmol N-hydroxyphthalimide, at 200°C, 0.001MPa O 2 Under pressure, after reacting for 5 hours, analyze the reaction result with a gas chromatograph; the conversion rate of indane can reach 19%, and the selectivity of indan-1-one can reach 13%; at this time, it can be cooled, distilled, and the product can be collected.
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