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  2. Grieco elimination - Wikipedia

    en.wikipedia.org/wiki/Grieco_elimination

    The Grieco elimination is an organic reaction describing the elimination reaction of an aliphatic primary alcohol through a selenide to a terminal alkene. [ 1 ] [ 2 ] It is named for Paul Grieco . The alcohol first reacts with o -nitrophenylselenocyanate and tributylphosphine to form a selenide via a nucleophilic substitution on the electron ...

  3. Chugaev elimination - Wikipedia

    en.wikipedia.org/wiki/Chugaev_elimination

    The Chugaev elimination is a chemical reaction that involves the elimination of water from alcohols to produce alkenes. The intermediate is a xanthate . It is named for its discoverer, the Russian chemist Lev Aleksandrovich Chugaev (1873–1922), who first reported the reaction sequence in 1899.

  4. Julia olefination - Wikipedia

    en.wikipedia.org/wiki/Julia_olefination

    The Julia olefination (also known as the Julia–Lythgoe olefination) is the chemical reaction used in organic chemistry of phenyl sulfones (1) with aldehydes (or ketones) to give alkenes (olefins)(3) after alcohol functionalization and reductive elimination using sodium amalgam or SmI 2. The reaction is named after the French chemist Marc Julia.

  5. Desulfonylation reactions - Wikipedia

    en.wikipedia.org/wiki/Desulfonylation_reactions

    This process is a key step of the Julia olefination, which yields alkenes via addition of an α-sulfonyl carbanion to an aldehyde followed by reductive elimination. Sodium amalgam [ 9 ] or samarium (II) iodide/HMPA [ 10 ] may be used to convert β-sulfonyloxy or β- acyloxy sulfones to the corresponding alkenes.

  6. Ei mechanism - Wikipedia

    en.wikipedia.org/wiki/Ei_mechanism

    In organic chemistry, the E i mechanism (Elimination Internal/Intramolecular), also known as a thermal syn elimination or a pericyclic syn elimination, is a special type of elimination reaction in which two vicinal (adjacent) substituents on an alkane framework leave simultaneously via a cyclic transition state to form an alkene in a syn elimination. [1]

  7. Selenoxide elimination - Wikipedia

    en.wikipedia.org/wiki/Selenoxide_elimination

    Selenoxide elimination (also called α-selenation) [1] is a method for the chemical synthesis of alkenes from selenoxides. It is most commonly used to synthesize α,β-unsaturated carbonyl compounds from the corresponding saturated analogues. [2] It is mechanistically related to the Cope reaction.

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