Method for preparing 1,2-cyclohexanediol by catalytic oxidation of cyclohexene
A cyclohexanediol, catalytic oxidation technology, applied in the directions of oxidation reaction preparation, organic chemistry, etc., can solve the problems affecting the industrialized production of products, high preparation cost, cumbersome steps, etc., and achieve high industrial application value, production cost reduction, and technology. Simple process effect
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Embodiment 1
[0012] Add respectively 0.10g molybdenum trioxide, 5.0g toluene, 0.063mol (5.166g) cyclohexene and 0.063mol (65%, 8.74g) tert-butyl hydroperoxide in a 50mL round bottom flask, install a condenser at 80 Heat and stir in an oil bath at ℃ for 10 hours, cool to room temperature, analyze the product by gas chromatography, the conversion rate of cyclohexene is 93.0%, the selectivity of 1,2-cyclohexanediol is 93.5%, and the remaining products are cyclohexenone and 2-hydroxycyclohexanone.
Embodiment 2
[0014] Add 0.10g vanadium pentoxide, 5.0g toluene, 0.063mol (5.166g) cyclohexene and 0.063mol (65%, 8.74g) tert-butyl hydroperoxide respectively in a 50mL round bottom flask, and install a condenser tube in Heat and stir in an oil bath at 80°C for 10 hours, cool to room temperature, and analyze the product by gas chromatography. The conversion rate of cyclohexene is 73.7%, the selectivity of 1,2-cyclohexanediol is 91.2%, and the remaining products are epoxy Cyclohexane and cyclohexenone.
Embodiment 3
[0016] Add 0.10g niobium pentoxide, 5.0g toluene, 0.063mol (5.166g) cyclohexene and 0.063mol (65%, 8.74g) tert-butyl hydroperoxide respectively in a 50mL round bottom flask, install a condenser tube in Heat and stir in an oil bath at 80°C for 10 hours, cool to room temperature, and analyze the product by gas chromatography. The conversion rate of cyclohexene is 2.7%, the selectivity of 1,2-cyclohexanediol is 31.3%, and the remaining products are epoxy Cyclohexane and cyclohexenone.
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