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  2. Nitrobenzoic acid - Wikipedia

    en.wikipedia.org/wiki/Nitrobenzoic_acid

    It can be prepared by nitration of benzoic acid. It also can be prepared by treating benzaldehyde under nitration conditions, a process that initially converts the aldehyde to the acid. 4-Nitrobenzoic acid is a precursor to 4-aminobenzoic acid, which is in turn used to prepare the anesthetic procaine. 4-Nitrobenzoic acid is prepared by ...

  3. 3-Nitrobenzoic acid - Wikipedia

    en.wikipedia.org/wiki/3-Nitrobenzoic_acid

    3-Nitrobenzoic acid is an organic compound with the formula C 6 H 4 (NO 2)CO 2 H. It is an aromatic compound and under standard conditions, it is an off-white solid. The two substituents are in a meta position with respect to each other, giving the alternative name of m-nitrobenzoic acid.

  4. 2-Nitrobenzoic acid - Wikipedia

    en.wikipedia.org/wiki/2-Nitrobenzoic_acid

    2-Nitrobenzoic acid or o-nitrobenzoic acid is an organic compound with the formula C 6 H 4 (NO 2)CO 2 H. It is prepared by oxidation of 2-nitrotoluene with nitric acid. [1] In consists of a carboxylic acid group and a nitro group in the ortho configuration. Reduction of the nitro group into an amine produces anthranilic acid.

  5. Ellman's reagent - Wikipedia

    en.wikipedia.org/wiki/Ellman's_reagent

    Ellman's reagent (5,5′-dithiobis-(2-nitrobenzoic acid) or DTNB) is a colorogenic chemical used to quantify the number or concentration of thiol groups in a sample. [3] It was developed by George L. Ellman.

  6. 4-Nitrobenzoic acid - Wikipedia

    en.wikipedia.org/wiki/4-Nitrobenzoic_acid

    4-Nitrobenzoic acid is prepared by oxidation of 4-nitrotoluene using oxygen or dichromate as oxidants. [7] Alternatively, it has been prepared by nitration of polystyrene followed by oxidation of the alkyl substituent. This method proceeds with improved para/ortho selectivity owing to the steric protection of the ortho positions by the polymer ...

  7. 3,5-Dinitrobenzoic acid - Wikipedia

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

    3,5-dinitrobenzoic acid-2-propylester (mp.: 123 °C [4]). Compared to 4-nitrobenzoic acid, another acid that is used similarly, derivates of 3,5-dinitrobenzoic acid have higher melting points, so that it is preferred when the 4-nitrobenzoic acid derivate has a melting point too low to be accurately identified. [4]

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  9. Shiina macrolactonization - Wikipedia

    en.wikipedia.org/wiki/Shiina_macrolactonization

    The hydroxyl group in the seco acid attacks its host molecule through intramolecular nucleophilic substitution, and at the same time, carboxylate anion, derived from 2-methyl-6-nitrobenzoic acid, acts as a deprotonation agent, promoting the progression of the cyclization and producing the desired lactone.