Preparation method of 2,2'-dibenzamido diphenyl zinc disulfide

Preparation method of 2,2'-dibenzamido diphenyl zinc disulfide

  • CN 104,649,947 A
  • Filed: 12/24/2014
  • Published: 05/27/2015
  • Est. Priority Date: 12/24/2014
  • Status: Active Application
First Claim
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1. one kind 2, the preparation method of 2 '"'"'-dibenzoylamino diphenyl disulfide zinc salt, is characterized in that, comprise the following steps:

  • 1) ring-opening reaction;

    take benzothiazole as starting raw material, under 110-120 DEG C of reflux conditions, benzothiazole open loop in the aqueous solution of sodium hydroxide obtains adjacent mercaptoaniline;

    2) acylation reaction;

    adopt mineral acid regulating step 1 after cooling) pH of reaction soln is 8.8-9.2, under 5-10 DEG C of condition, drip Benzoyl chloride, after dropwising, holding temperature 5-10 DEG C, stirring reaction 0.5-3h, completes acidylate;

    3) salt-forming reaction;

    to step

         2) gained acidylate completes in liquid and drops into sodium hydroxide, and stir and be warming up to 70-80 DEG C, reaction 2-4h;

    4) generate zinc salt;

    step

         3) gained reaction solution is cooled to 40-50 DEG C, drop into zinc oxide, generate white precipitate, after completion of the reaction, separation and purification obtains 2,2 '"'"'-dibenzoylamino diphenyl disulfide zinc salt wet product;

    5) oven dry, pulverizing, packaging get product.

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