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  2. Doebner–Miller reaction - Wikipedia

    en.wikipedia.org/wiki/Doebner–Miller_reaction

    A 2006 study [6] proposes a fragmentation-recombination mechanism based on carbon isotope scrambling experiments. In this study 4-isopropylaniline 1 is reacted with a mixture (50:50)of ordinary pulegone and the 13 C-enriched isomer 2 and the reaction mechanism is outlined in scheme 2 with the labeled carbon identified with a red dot.

  3. Skraup reaction - Wikipedia

    en.wikipedia.org/wiki/Skraup_reaction

    The Skraup synthesis is a chemical reaction used to synthesize quinolines. It is named after the Czech chemist Zdenko Hans Skraup (1850-1910). In the archetypal Skraup reaction, aniline is heated with sulfuric acid , glycerol , and an oxidizing agent such as nitrobenzene to yield quinoline.

  4. Aniline - Wikipedia

    en.wikipedia.org/wiki/Aniline

    Aniline is predominantly used for the preparation of methylenedianiline and related compounds by condensation with formaldehyde. The diamines are condensed with phosgene to give methylene diphenyl diisocyanate, a precursor to urethane polymers. [7] Most aniline is consumed in the production of methylenedianiline, a precursor to polyurethanes.

  5. Doebner reaction - Wikipedia

    en.wikipedia.org/wiki/Doebner_reaction

    An alternative mechanism is based on the aniline and the aldehyde forming at first the Schiff base upon water elimination. The subsequent reaction with the enol form of pyruvic acid ( 1 ) leads to the formation of the above-mentioned aniline derivative ( 3 ) followed by the above-described reaction mechanism: [ 4 ]

  6. Conrad–Limpach synthesis - Wikipedia

    en.wikipedia.org/wiki/Conrad–Limpach_synthesis

    The Conrad–Limpach synthesis is the condensation of anilines (1) with β-ketoesters (2) to form 4-hydroxyquinolines (4) via a Schiff base (3). The overall reaction type is a combination of both an addition reaction as well as a rearrangement reaction .

  7. Acetanilide - Wikipedia

    en.wikipedia.org/wiki/Acetanilide

    Acetanilide can be produced by reacting acetic anhydride with aniline: [7]. C 6 H 5 NH 2 + (CH 3 CO) 2 O → C 6 H 5 NHCOCH 3 + CH 3 COOH. The preparation used to be a traditional experiment in introductory organic chemistry lab classes, [8] but it has now been widely replaced by the preparation of either paracetamol or aspirin, both of which teach the same practical techniques (especially ...

  8. 4-Nitroaniline - Wikipedia

    en.wikipedia.org/wiki/4-Nitroaniline

    Below is a laboratory synthesis of 4-nitroaniline from aniline. The key step in this reaction sequence is an electrophilic aromatic substitution to install the nitro group para to the amino group. The amino group can be easily protonated and become a meta director. Therefore, a protection of the acetyl group is required.

  9. Béchamp reduction - Wikipedia

    en.wikipedia.org/wiki/Béchamp_reduction

    The reaction was first used by Antoine Béchamp to reduce nitronaphthalene and nitrobenzene to naphthylamine and aniline, respectively. [3] The Béchamp reduction is broadly applicable to aromatic nitro compounds. [4] [5] Aliphatic nitro compounds are however more difficult to reduce, often remaining as the hydroxylamine. Tertiary aliphatic ...