121246-28-4Relevant articles and documents
Preparation method of 2, 4, 6-tri(N-1, 4-dimethylamyl-p-phenylenediamine)-1, 3, 5-triazine
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Paragraph 0023; 0025; 0026; 0028-0029; 0031; 0032; 0034; ..., (2021/11/26)
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.
Preparation method of anti-aging agent TAPDT and intermediate thereof
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Paragraph 0023; 0025; 0026; 0028; 0029; 0031; 0034, (2021/10/30)
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.