Efficient preparation method of plant production accelerant sodium alpha-naphthyl acetate
A technology of sodium naphthalene acetate and accelerators, applied in the direction of carbon monoxide reaction to prepare carboxylic acids, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low yield, achieve large specific surface area, simple and easy method, The effect of uniform pore size distribution
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Embodiment 1
[0032] A kind of high-efficiency preparation method of plant production promoter α-naphthyl acetate sodium, its specific scheme is as follows:
[0033] Add 1.6g of sodium hydroxide, 6.28g of 1-chloromethylnaphthalene, and 50g of solvent into the autoclave, stir and mix evenly, then add 0.1g of magnetic immobilized Lewis acid catalyst, then replace the air in the autoclave with carbon monoxide twice, And keep the pressure in the kettle at 0.6MPa, control the temperature to 50°C, stir and react for 3 hours, stop heating after completion, cool down to room temperature, filter out the catalyst after exhausting the residual gas, let the filtrate stand for stratification, separate the lower oil layer and wash it with water 2 times, the washing liquid and the upper water layer were combined, extracted with an organic solvent to remove impurities, and then the solvent was distilled off under reduced pressure, and then the obtained solid was acidified with 1% hydrochloric acid by mass g...
Embodiment 2
[0042] A kind of high-efficiency preparation method of plant production promoter α-naphthyl acetate sodium, its specific scheme is as follows:
[0043] 1.8g of sodium hydroxide, 8.24g of 1-chloromethylnaphthalene, and 58g of solvent were added to the autoclave, and after stirring and mixing evenly, 2.5g of magnetically immobilized Lewis acid catalyst was added, and then the air in the reactor was replaced with carbon monoxide for 4 times. And keep the pressure in the kettle at 1.2MPa, control the temperature to 55°C, stir and react for 6h, stop heating after completion, cool down to room temperature, filter out the catalyst after exhausting the residual gas, let the filtrate stand for stratification, separate the lower oil layer and wash it with water 4 times, the washing liquid and the upper aqueous layer were combined, and the solvent was distilled off under reduced pressure after extraction with an organic solvent, and then the obtained solid was acidified with 3% hydrochlor...
Embodiment 3
[0052] A kind of high-efficiency preparation method of plant production promoter α-naphthyl acetate sodium, its specific scheme is as follows:
[0053] 2.2g of sodium hydroxide, 9.42g of 1-chloromethylnaphthalene, and 65g of solvent were added to the autoclave, and after stirring and mixing evenly, 5g of the magnetic immobilized Lewis acid catalyst was added, and then the air in the reactor was replaced with carbon monoxide for 5 times, and Keep the pressure in the kettle at 2.2MPa, control the temperature to 65°C, stir and react for 10h, stop heating after completion, cool down to room temperature, filter out the catalyst after exhausting the residual gas, let the filtrate stand for stratification, separate the lower oil layer and wash it with water for 5 The second time, the washing liquid and the upper water layer were combined, and the solvent was distilled off under reduced pressure after extraction with an organic solvent to remove impurities, and then the obtained solid ...
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