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  2. 1-Naphthylamine - Wikipedia

    en.wikipedia.org/wiki/1-Naphthylamine

    The sulfonic acid derivatives of 1-naphthylamine are used for the preparation of azo dye.These compounds possess the important property of dyeing unmordanted cotton.. An important derivative is naphthionic acid (1-aminonaphthalene-4-sulfonic acid), which is produced by heating 1-naphthylamine and sulfuric acid to 170–180 °C in the presence of crystallized oxalic acid.

  3. 1-Naphthol - Wikipedia

    en.wikipedia.org/wiki/1-naphthol

    The 4-position of 1-naphthol is susceptible to electrophilic attack. This regioselective reaction is exploited in the preparation of diazo dyes, which are form using diazonium salts. Reduction of the diazo derivatives gives 4-amino-1-naphthol. [4] [5] Partial reduction of 1-naphthol gives the tetrahydro derivative, leaving intact the phenol ...

  4. N-(1-Naphthyl)ethylenediamine - Wikipedia

    en.wikipedia.org/wiki/N-(1-Naphthyl)ethylenediamine

    Then an excess but fixed volume of sulfanilamide and N-(1-naphthyl)ethylenediamine dihydrochloride solution is added. With nitrous acid as the limiting reagent, the azo coupling reaction produces an azo dye quantitatively with respect to the nitrite ions: The diazo compound formed accounts for the red coloration typical for a positive result.

  5. 1-Naphthalenethiol - Wikipedia

    en.wikipedia.org/wiki/1-Naphthalenethiol

    A practical synthesis involves the tin/HCl-reduction of the naphthalene-1-sulfonyl chloride. [1] 1-Naphthalenethiol can also be prepared from 1-bromonaphthalene by Pd-catalyzed reaction with the silylthiolate i Pr 3 SiSK followed by hydrolysis of the silathioether. [2] It was first prepared from the Grignard reagent generated from 1 ...

  6. Bucherer reaction - Wikipedia

    en.wikipedia.org/wiki/Bucherer_reaction

    The organic reaction also goes by the name Bucherer-Lepetit reaction or (incorrectly) the Bucherer-Le Petit reaction. The reaction is used to convert 1,7-dihydroxynaphthalene into 7-amino-1-naphthol and 1-aminonaphthalene-4-sulfonic acid into 1-hydroxynaphthalene-4-sulfonic acid. It is also useful for transamination reactions of 2 ...

  7. Ethylamine - Wikipedia

    en.wikipedia.org/wiki/Ethylamine

    Ethylamine, also known as ethanamine, is an organic compound with the formula CH 3 CH 2 NH 2.This colourless gas has a strong ammonia-like odor.It condenses just below room temperature to a liquid miscible with virtually all solvents.

  8. N-Phenylnaphthalen-1-amine - Wikipedia

    en.wikipedia.org/wiki/N-Phenylnaphthalen-1-amine

    N-Phenylnaphthalen-1-amine (NPN) is an aromatic amine with the chemical formula C 16 H 12 NH.

  9. Debus–Radziszewski imidazole synthesis - Wikipedia

    en.wikipedia.org/wiki/Debus–Radziszewski...

    The Debus–Radziszewski imidazole synthesis is a multi-component reaction used for the synthesis of imidazoles from a 1,2-dicarbonyl, an aldehyde, and ammonia or a primary amine. The method is used commercially to produce several imidazoles. [1] The process is an example of a multicomponent reaction. The reaction can be viewed as occurring in ...

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