Reference of 21803-75-8, Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 21803-75-8, name is 4-Amino-3-chlorobenzonitrile, This compound has unique chemical properties. The synthetic route is as follows.
Compound 3b (390.0 g, 1.00 mol) was dissolved in 800 mL 2-Me-THF followed by the addition of triethylamine (TEA, 232.5 g, 2.30 mol). The light yellow solution was cooled to 5 C. Methanesulfonyl chloride (126.0 g, 1.10 mol) was added within 1 h while maintaining the temperature at 5 C. The reaction was continued for 1 h at 5 C. A solution of 4b (4-amino-3- chlorobenzonitrile) (167.0 g, 1.10 mol) in 300 mL 2-Me-THF was added and the slurry was heated to reflux (-84 C), followed by stirring under reflux for 4 h. The reaction mixture was cooled to 20 C and the precipitate was removed by suction filtration. The product cake was washed with 200 mL 2-Me-THF. The mother liquor was used as such in the next step.
The chemical industry reduces the impact on the environment during synthesis 4-Amino-3-chlorobenzonitrile. I believe this compound will play a more active role in future production and life.
Reference:
Patent; INTERVET INTERNATIONAL B.V.; BRINK, Monika; NIEDERMANN, Hans-Peter; KNELL, Marcus; FENG, Tao; TRZASKA, Scott, T.; COOPER, Arthur, J.; DESAI, Shaileshkumar Ramanlal; GORE, Vinayak Keshav; WO2012/85645; (2012); A1;,
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