Process for the production of 5-nitro-acet-2,4- xylidine

Details Process for the production of 5-nitro-acet-2,4- xylidine Process for the production of 5-nitro-acet-2,4- xylidine

C - Chemistry, Metallurgy

07

C

260/556.9

C07C 233/02 (2006.01)

Patent

CA 1176274

Mo 2231 OC-002 PROCESS FOR THE PRODUCTION OF 5-NITRO-ACET-2,4-XYLIDINE ABSTRACT OF THE DISCLOSURE The present invention is directed to a process for preparing 5-nitro-acet-2,4-xylidine comprising (a) dissolving acet-2,4-xylidine in an aqueous sulfuric acid solution, (b) nitrating the resultant solution with a mixture of nitric acid and sulfuric acid, (c) adding the resultant nitration mixture to an aqueous sulfuric acid solution containing from 25 to 45% by weight of sulfuric acid, while maintaining the temperature at from 20 to 50°C to thereby produce a slurry containing sulfuric acid in a concentration of from 30 to 50% by weight based solely on the weight of water and sulfuric acid, the total amount of sulfuric acid in said slurry being such that the molar ratio of sulfuric acid to the nitro-acet-2,4-xylidine isomers is from 53:1 to 10:1, and (d) recovering 5-nitro-acet-2,4-xylidine. Mo-2231

399802

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