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A process for preparing high-purity apps is special method (by machine translation)
The name of this invention is “a process for preparing high-purity apps is special method”, relates to the technical field of pharmaceutical chemistry, in particular to a method for preparing high-purity apps is special. The present invention provides a method for preparing (I) apps is special: (S)- 2 – [1 – (3 – ethoxy – 4 – methoxyphenyl) – 2 – methanesulphonyl-ethyl] – 4 – acetyl amino indole – 1, 3 – dione method for preparing high purity: chiral amine: (S)- 1 – (3 – ethoxy – 4 – methoxyphenyl) – 2 – (methylsulfonyl) ethylamine with anhydride: 3 – acetyl amino phthalic anhydride in acetic acid in the solvent, alkali metal acetate as catalyst, the reaction production like type (I) apps is special, then acetone ethanol mixed solvent crystallization refined, get the purity up to 99.9%, […] not more than 0.05% of the high-purity finished product, yield as high as 90% or more. Process mild reaction conditions, the production cost is low, and is suitable for industrial production, there are very good economic effect. (by machine translation)
Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.name: N-(1,3-Dioxo-1,3-dihydroisobenzofuran-4-yl)acetamide, you can also check out more blogs about6296-53-3
Reference£º
Benzofuran – Wikipedia,
Benzofuran | C8H3470O – PubChem