68385-96-6Relevant academic research and scientific papers
Synthesis method of disperse red F3BS
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Paragraph 0051; 0052; 0057; 0058, (2016/10/31)
The invention discloses a synthesis method of disperse red F3BS. According to the synthesis method, three reaction units for amination, diazotization and coupling are adopted, 5-methylisophthalonitrile is taken as a raw material, acetic acid and polyethylene glycol are taken as mixed solvents, Pd adopting a three-dimensional net-like nanostructure is taken as a catalyst, the mixture has an amination reaction with a hydroxylamine hydrochloride aqueous solution under the assisted catalysis action of a phase transfer catalyst polyethylene glycol, 2,6-dicyano-4-methylaniline is generated, obtained 2,6-dicyano-4-methylaniline has a diazotization reaction under the action of sodium nitrite by taking a hydrochloric acid aqueous solution as a solvent, 2,6-dicyano-4-methylaniline hydrochloride is generated, finally synthesized 2,6-dicyano-4-methylaniline hydrochloride has a coupling reaction under the action of sulfamic acid and N,N-diethyl meta-methanesulfonamide by taking a hydrochloric acid aqueous solution as a solvent, and a target product disperse red F3BS is generated. 2,6-dicyano-4-methylaniline is prepared through direct amination of 5-methylisophthalonitrile, cyanide is not required, the production process is environment-friendly, and the yield is high.
