P-hydroxybenzene glycine synthesis technology

P-hydroxybenzene glycine synthesis technology

  • CN 101,362,703 A
  • Filed: 08/09/2007
  • Published: 02/11/2009
  • Est. Priority Date: 08/09/2007
  • Status: Active Application
First Claim
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1. D-pHPG synthetic technology, it is characterized in that the reaction of under the effect of certain proportion, temperature, time, cooking different foods in one pot of phenol and oxoethanoic acid, thionamic acid, catalyzer, water, reaction finishes, drop into reducing substances, transfer pH value with alkali at last, crystallization, mother liquor separates uses massive laundering, use organic solvent washing then, the product HPG that obtains is a white powder.

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