Clean production method of 2, 3-octanedione
A clean production, octanedione technology, applied in the oxidative preparation of carbonyl compounds, organic chemistry and other directions, can solve the problems of isoamyl nitrite toxicity, environmental pollution, flammability, etc., to achieve environmental friendliness, less "three wastes", and pure aroma Effect
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Embodiment 1
[0025] A clean production method for 2,3-octanedione, comprising the steps of:
[0026] The first step, the preparation of the composite catalyst
[0027] (1) Preparation of component 1: Take 300g of 5-methoxytriazole, 300g of chlorobenzene and 600g of acetonitrile according to a certain proportion, put them in a three-necked flask, heat to reflux, the reflux temperature is 85-95℃, and the reflux time is 10h , to obtain the crude material of component 1, and then the crude material of component 1 is centrifuged, washed and dried to obtain a mass of 396g of component 1, and the component 1 is 5-methoxy-triphenyl-1,2 , 4-triazolium salt;
[0028] (2) Preparation of component 2: Take 300g of 5-methoxythiazole, 300g of benzyl chloride and 600g of acetonitrile in a certain proportion, put them in a three-necked flask, heat to reflux, the reflux temperature is 85-95°C, and the reflux time is 10h. The crude material of component 2 was obtained, and then the crude material of compon...
Embodiment 2
[0037] A clean production method for 2,3-octanedione, comprising the steps of:
[0038] The first step, the preparation of the composite catalyst
[0039] (1) Preparation of component 1: Take 400g of 5-methoxytriazole, 600g of chlorobenzene and 800g of acetonitrile according to a certain proportion, put them in a three-necked flask, heat to reflux, the reflux temperature is 85-95℃, and the reflux time is 10h , to obtain the crude material of component 1, and then the crude material of component 1 is centrifuged, washed and dried to obtain a mass of 542g of component 1, and the component 1 is 5-methoxy-triphenyl-1,2 , 4-triazolium salt;
[0040] (2) Preparation of component 2: Take 300g of 5-methoxythiazole, 300g of benzyl chloride and 600g of acetonitrile in a certain proportion, put them in a three-necked flask, heat to reflux, the reflux temperature is 85-95°C, and the reflux time is 10h. The crude material of component 2 was obtained, and then the crude material of compon...
Embodiment 3
[0049] A clean production method for 2,3-octanedione, comprising the steps of:
[0050] The first step, the preparation of the composite catalyst
[0051] (1) Preparation of component 1: Take 400g of 5-methoxytriazole, 400g of chlorobenzene and 1000g of acetonitrile according to a certain proportion, put them in a three-necked flask, heat to reflux, the reflux temperature is 85-95℃, and the reflux time is 10h , to obtain the crude material of component 1, and then the crude material of component 1 is centrifuged, washed and dried to obtain a mass of 583g of component 1, and the component 1 is 5-methoxy-triphenyl-1,2 , 4-triazolium salt;
[0052] (2) Preparation of component 2: Take 600g of 5-methoxythiazole, 800g of benzyl chloride and 1300g of acetonitrile in a certain proportion, put them in a three-necked flask, heat to reflux, the reflux temperature is 85-95℃, and the reflux time is 10h. The crude material of component 2 was obtained, and then the crude material of compo...
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