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  2. Dehydrohalogenation - Wikipedia

    en.wikipedia.org/wiki/Dehydrohalogenation

    Dehydrohalogenation to give an alkene In chemistry , dehydrohalogenation is an elimination reaction which removes a hydrogen halide from a substrate . The reaction is usually associated with the synthesis of alkenes , but it has wider applications.

  3. Aryne - Wikipedia

    en.wikipedia.org/wiki/Aryne

    Upon treatment with basic nucleophiles, aryl halides deprotonate alpha to the leaving group, resulting in dehydrohalogenation. Isotope exchange studies indicate that for aryl fluorides and, sometimes, aryl chlorides, the elimination event proceeds in two steps, deprotonation, followed by expulsion of the nucleophile.

  4. Zaytsev's rule - Wikipedia

    en.wikipedia.org/wiki/Zaytsev's_rule

    In it, Zaytsev proposed a purely empirical rule for predicting the favored regiochemistry in the dehydrohalogenation of alkyl iodides, though it turns out that the rule is applicable to a variety of other elimination reactions as well. While Zaytsev's paper was well referenced throughout the 20th century, it was not until the 1960s that ...

  5. Dichlorodiphenyldichloroethylene - Wikipedia

    en.wikipedia.org/wiki/Dichlorodiphenyldichloro...

    Dichlorodiphenyldichloroethylene (DDE) is a chemical compound formed by the loss of hydrogen chloride (dehydrohalogenation) from DDT, of which it is one of the more ...

  6. Dehalogenation - Wikipedia

    en.wikipedia.org/wiki/Dehalogenation

    Scheme for dehalogenation reaction (R = alkyl or aryl group, X = I, Cl, Br, F) In organic chemistry, dehalogenation is a set of chemical reactions that involve the cleavage of carbon-halogen bonds; as such, it is the inverse reaction of halogenation.

  7. Stereoselectivity - Wikipedia

    en.wikipedia.org/wiki/Stereoselectivity

    An example of modest stereoselectivity is the dehydrohalogenation of 2-iodobutane which yields 60% trans-2-butene and 20% cis-2-butene. [5] Since alkene geometric isomers are also classified as diastereomers, this reaction would also be called diastereoselective.

  8. Halogenation - Wikipedia

    en.wikipedia.org/wiki/Halogenation

    The nature of the substrate determines the pathway. The facility of halogenation is influenced by the halogen. Fluorine and chlorine are more electrophilic and are more aggressive halogenating agents. Bromine is a weaker halogenating agent than both fluorine and chlorine, while iodine is the least reactive of them all.

  9. Dehydrogenation - Wikipedia

    en.wikipedia.org/wiki/Dehydrogenation

    In chemistry, dehydrogenation is a chemical reaction that involves the removal of hydrogen, usually from an organic molecule.It is the reverse of hydrogenation. ...