- Synthesis method of 5-amino-2, 4-dihydroxybenzoic acid
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The invention relates to a synthetic method of 5-amino-2, 4-dihydroxybenzoic acid, which comprises the following steps: with resorcinol as a raw material, carrying out Koble-Schmitt reaction to obtain2,4-dihydroxybenzoic acid; performing nitration reaction on 2,4-dihydroxybenzoic acid to obtain 5-nitro-2,4-dihydroxybenzoic acid; and carrying out reduction reaction on 5-nitro-2,4-dihydroxybenzoicacid to obtain a product 5-amino-2,4-dihydroxybenzoic acid. The method has the advantages of easy control of reaction process parameters, easily available raw materials, short reaction time, simple post-treatment, high atom utilization rate, high purity and high industrial feasibility.
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- Preparation method for 5-amino-2,4-dihydroxybenzoic acid
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The invention provides a preparation method for 5-amino-2,4-dihydroxybenzoic acid. The method comprises the steps that the raw material 2,4-dihydroxybenzoic acid is provided; the 2,4-dihydroxybenzoicacid is subjected to a nitration reaction to generate 5-
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Paragraph 0044; 0045; 0046; 0047; 0048; 0049; 0050-0054
(2019/04/26)
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