- Preparation method of 2, 4, 6-tri(N-1, 4-dimethylamyl-p-phenylenediamine)-1, 3, 5-triazine
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The invention discloses a preparation method of 2, 4, 6-tri(N-1, 4-dimethylamyl-p-phenylenediamine)-1, 3, 5-triazine. The preparation method comprises the following steps: carrying out catalytic hydrogenation reaction on p-aminoacetanilide and methyl isoamyl ketone to obtain N-1, 4-dimethylamyl-p-acetanilide; removing acetyl from N-1, 4-dimethylamyl-p-acetanilide in an alkali solution, so as to obtain N-1, 4-dimethylamyl-p-aniline; and carrying out substitution reaction on cyanuric chloride and N-1, 4-dimethylamyl-p-phenylenediamine, and carrying out after-treatment to obtain the 2, 4, 6-tri(N-1, 4-dimethylamyl-p-phenylenediamine)-1, 3, 5-triazine. The method has the advantages of high reaction selectivity and yield, few byproducts, low cost and good quality.
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Paragraph 0023; 0025; 0026; 0028-0029; 0031; 0032; 0034; ...
(2021/11/26)
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- Preparation method of tris (N-1, 4-dimethyl amyl p-phenylenediamine)-1, 3, 5-triazine and intermediate thereof
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The invention discloses a preparation method of tris (N-1, 4-dimethyl amyl p-phenylenediamine)-1, 3, 5-triazine and an intermediate thereof. The method comprises the steps of taking cyanuric chloride, formamide and sodium carbonate as raw materials, reacting to form 2, 4, 6-tris (formamido)-1, 3, 5-triazine, taking the 2, 4, 6-tris (formamido)-1, 3, 5-triazine as an intermediate, then reacting the intermediate with parachloronitrobenzene and sodium carbonate to form 2, 4, 6-tri (4-nitrophenyl)-1, 3, 5-triazine, carrying out a catalytic hydrogenation reduction alkylation reaction on the 2, 4, 6-tri (4-nitrophenyl)-1, 3, 5-triazine and methyl isoamyl ketone to obtain the 2, 4, 6-tri (N-1, 4-dimethyl amyl p-phenylenediamine)-1, 3, 5-triazine. The method has the advantages of easily available raw materials, low cost, high reaction selectivity and yield, few byproducts, low cost and good quality.
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Paragraph 0013; 0023; 0025; 0026; 0028; 0029; 0031-0032
(2021/09/26)
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- Preparation method of anti-aging agent TAPDT and intermediate thereof
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The invention discloses a preparation method of an anti-aging agent TAPDT and an intermediate thereof. The preparation method comprises the following steps: carrying out a condensation dehydration reaction on melamine and formic acid to generate 2,4,6-tri(formamido)-1,3,5-triazine, then subjecting 2,4,6-tri(formamido)-1,3,5-triazine to reacting with parachloronitrobenzene under the catalysis of sodium carbonate to generate 2,4,6-tri(4-nitrophenyl)-1,3,5-triazine, and carrying out a hydrogenation reversion reaction on 2,4,6-tri(4-nitrophenyl)-1,3,5-triazine and methyl isoamyl ketone under the catalysis of a catalyst to obtain the anti-aging agent TAPDT. The method has the advantages of usage of easily available raw materials, low cost, high reaction selectivity and yield, few byproducts, low cost and good quality.
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Paragraph 0023; 0025; 0026; 0028; 0029; 0031; 0034
(2021/10/30)
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- Method of producing triazine derivatives
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The invention provides a method of producing triazine derivatives, the preparation method comprises the following steps: the para-nitroaniline compound A with the substitution reaction, forming intermediate B; the intermediate with a compound B C hydrogen reduction alkylation reaction, to obtain the triazine derivatives. The present invention provides a substituted by the above-mentioned method of the first hydrogenation after reducing hydrocarbon two-step preparation triazine derivatives, not only has a high product yield, but also greatly shortened the technological process. At the same time, this method effectively avoid in the traditional technique double-substituted P-phenylenediamine of by-product, the product separation becomes easier, the cost is greatly reduced, pollution-free, high product quality, easy to realize industrial.
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Paragraph 0046-0049; 0054-0061; 0065-0070
(2018/07/10)
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