The chemical industry reduces the impact on the environment during synthesis 26576-46-5, name is 5-Acetoacetlamino benzimdazolone, I believe this compound will play a more active role in future production and life. 26576-46-5
To 30 parts of dimethylacetamide were added 5.6 parts of 3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid,And 2.6 parts of thionyl chloride were added, and the mixture was stirred at 40 to 50 C. for 0.5 hour. 3 parts of 4′-aminoacetanilide was added, and the mixture was heated at 90 to 100 C. for 3 hours. 30 parts of water and 8.3 parts of concentrated hydrochloric acid were added, and the mixture was stirred at 90 to 100 C. for 1 hour.It was cooled to 0 to 10 C., and 1.4 parts of sodium nitrite was added to diazotize. 5 parts of sodium hydroxide and 4.7 parts of 5- (acetoacetamido) -2-benzimidazolinone were dissolved in 150 parts of water, the aforementioned diazo solution was added, and the mixture was stirred at 20 to 30 C. for 4 hours, then 70 to 80 0> C for 1 hour. After filtration, washing with water and drying, 11.6 parts of a yellow pigment additive (H) represented by the following formula (H) was obtained.
The chemical industry reduces the impact on the environment during synthesis 26576-46-5. I believe this compound will play a more active role in future production and life.
Reference:
Patent; DAINICHISEIKA COLOR & CHEMICALS MANUFACTURING COMPANY LIMITED; YANAGIMOTO, HIROMITSU; (36 pag.)JP2017/125083; (2017); A;,
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