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  2. 3,5-Dihydroxybenzoic acid - Wikipedia

    en.wikipedia.org/wiki/3,5-Dihydroxybenzoic_acid

    It is prepared by disulfonation of benzoic acid followed by hydrolysis of the disulfonate. [3] It is a metabolite of alkylresorcinols, first identified in human urine [4] and can be quantified in urine [5] and plasma, [6] and may be an alternative, equivalent biomarker of whole grain wheat intake. [7]

  3. Dihydroxybenzoic acid - Wikipedia

    en.wikipedia.org/wiki/Dihydroxybenzoic_acid

    Dihydroxybenzoic acids (DHBA) are a type of phenolic acids. There are six main compounds, having all the same molecular formula C 7 H 6 O 4. Those are: 2,3-Dihydroxybenzoic acid (2-Pyrocatechuic acid or hypogallic acid) 2,4-Dihydroxybenzoic acid (β-Resorcylic acid) 2,5-Dihydroxybenzoic acid (Gentisic acid) 2,6-Dihydroxybenzoic acid (γ ...

  4. 2,3-dihydro-2,3-dihydroxybenzoate dehydrogenase - Wikipedia

    en.wikipedia.org/wiki/2,3-dihydro-2,3-dihydroxy...

    2,3-diDHB dehydrogenase catalyzes the NAD +-dependent oxidation of 2,3-dihydro-2,3-dihydroxybenzoate to produce an aromatic compound 2,3-dihydroxybenzoic acid (2,3-DHB or simply DHB). [4] In times of iron deficiency, iron uptake is controlled by three genes: ent , fep , and fes for synthesis, export, and uptake of ferric Enterobactin and its ...

  5. Gentisic acid - Wikipedia

    en.wikipedia.org/wiki/Gentisic_acid

    Gentisic acid is produced by carboxylation of hydroquinone. [6] C 6 H 4 (OH) 2 + CO 2 → C 6 H 3 (CO 2 H)(OH) 2. This conversion is an example of a Kolbe–Schmitt reaction. Alternatively the compound can be synthesized from salicylic acid via Elbs persulfate oxidation. [7] [8]

  6. Knoevenagel condensation - Wikipedia

    en.wikipedia.org/wiki/Knoevenagel_condensation

    The Weiss–Cook reaction consists in the synthesis of cis-bicyclo[3.3.0]octane-3,7-dione employing an acetonedicarboxylic acid ester and a diacyl (1,2 ketone). The mechanism operates in the same way as the Knoevenagel condensation: [ 10 ]

  7. 2,4-Dihydroxybenzoic acid - Wikipedia

    en.wikipedia.org/wiki/2,4-Dihydroxybenzoic_acid

    2,4-Dihydroxybenzoic acid (β-resorcylic acid) is a dihydroxybenzoic acid. As a resorcylic acid, it is one of the three isomeric crystalline acids that are both carboxyl derivatives of resorcinol and dihydroxy derivatives of benzoic acid. [4] Synthesis from resorcinol is via the Kolbe-Schmitt reaction. [5]

  8. Danheiser benzannulation - Wikipedia

    en.wikipedia.org/wiki/Danheiser_Benzannulation

    Mycophenolic acid was prepared in nine steps in an overall yield of 17-19%. [15] Scheme 14:Benzannulation Toward the Synthesis of Mycophenolic Acid. In the synthesis of highly substituted indoles performed by Danheiser, the key step was a benzannulation reaction using cyclobutenone and ynamides to produce highly substituted aniline derivatives.

  9. Dakin oxidation - Wikipedia

    en.wikipedia.org/wiki/Dakin_oxidation

    The Dakin oxidation (or Dakin reaction) is an organic redox reaction in which an ortho- or para-hydroxylated phenyl aldehyde (2-hydroxybenzaldehyde or 4-hydroxybenzaldehyde) or ketone reacts with hydrogen peroxide (H 2 O 2) in base to form a benzenediol and a carboxylate.