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  2. Elimination reaction - Wikipedia

    en.wikipedia.org/wiki/Elimination_reaction

    An elimination reaction is a type of organic reaction in which two substituents are removed from a molecule in either a one- or two-step mechanism. [2] The one-step mechanism is known as the E2 reaction, and the two-step mechanism is known as the E1 reaction. The numbers refer not to the number of steps in the mechanism, but rather to the ...

  3. Evelyn effect - Wikipedia

    en.wikipedia.org/wiki/Evelyn_effect

    A kinetic and regional chemical study of the Evelyn effect has been described. The results, in the Journal of Chemical Education, made claims involving the mechanism by which the dehydrations occurred. The article looks into the claim of having E1 and E2 mechanisms occur in the reaction.

  4. Dehydration reaction - Wikipedia

    en.wikipedia.org/wiki/Dehydration_reaction

    The classic example of a dehydration reaction is the Fischer esterification, which involves treating a carboxylic acid with an alcohol to give an ester RCO 2 H + R′OH ⇌ RCO 2 R′ + H 2 O Often such reactions require the presence of a dehydrating agent, i.e. a substance that reacts with water.

  5. Fumarase - Wikipedia

    en.wikipedia.org/wiki/Fumarase

    Figure 1 depicts the fumarase reaction mechanism. Two residues catalyze proton transfer and the ionization state of these residues is in part defined by two forms of the enzyme, E 1 and E 2. In E 1, the groups exist in an internally neutralized AH/B: state, while in E 2, they occur in a zwitterionic A − /BH + state.

  6. Acyl-CoA dehydrogenase - Wikipedia

    en.wikipedia.org/wiki/Acyl-CoA_dehydrogenase

    The overall mechanism of Acyl-CoA dehydrogenase. The acyl-CoA dehydrogenase mechanism proceeds through an E2 elimination. This elimination is initiated by a glutamate residue, which, while necessary for the mechanism, is not conserved. [1] The residue appears in a wide range of locations within the different types of the enzyme (it is Glu 376 ...

  7. Alkene - Wikipedia

    en.wikipedia.org/wiki/Alkene

    Most common is the β-elimination via the E2 or E1 mechanism. [26] A commercially significant example is the production of vinyl chloride. The E2 mechanism provides a more reliable β-elimination method than E1 for most alkene syntheses. Most E2 eliminations start with an alkyl halide or alkyl sulfonate ester (such as a tosylate or triflate).

  8. Zaytsev's rule - Wikipedia

    en.wikipedia.org/wiki/Zaytsev's_rule

    When a small, unhindered base – such as sodium hydroxide, sodium methoxide, or sodium ethoxide – is used for an E2 elimination, the Zaytsev product is typically favored over the least substituted alkene, known as the Hofmann product. For example, treating 2-Bromo-2-methyl butane with sodium ethoxide in ethanol produces the Zaytsev product ...

  9. Ethylene (plant hormone) - Wikipedia

    en.wikipedia.org/wiki/Ethylene_(plant_hormone)

    The plant hormone ethylene is a combatant for salinity in most plants. Ethylene is known for regulating plant growth and development and adapted to stress conditions through a complex signal transduction pathway. Central membrane proteins in plants, such as ETO2, ERS1 and EIN2, are used for ethylene signaling in many plant growth processes.