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  2. Doering–LaFlamme allene synthesis - Wikipedia

    en.wikipedia.org/wiki/Doering–LaFlamme_allene...

    The reaction is a two-stage process, in which first the alkene is reacted with dichlorocarbene or dibromocarbene to form a dihalocyclopropane. This intermediate is then reacted with a reducing metal, such as sodium or magnesium, or with an organolithium reagent .

  3. Alkene - Wikipedia

    en.wikipedia.org/wiki/Alkene

    a Diels-Alder reaction. Alkenes add to dienes to give cyclohexenes. This conversion is an example of a Diels-Alder reaction. Such reaction proceed with retention of stereochemistry. The rates are sensitive to electron-withdrawing or electron-donating substituents. When irradiated by UV-light, alkenes dimerize to give cyclobutanes. [20]

  4. McMurry reaction - Wikipedia

    en.wikipedia.org/wiki/McMurry_reaction

    The McMurry reaction of benzophenone. The McMurry reaction is an organic reaction in which two ketone or aldehyde groups are coupled to form an alkene using a titanium chloride compound such as titanium(III) chloride and a reducing agent. The reaction is named after its co-discoverer, John E. McMurry.

  5. 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.

  6. Cycloalkene - Wikipedia

    en.wikipedia.org/wiki/Cycloalkene

    Cyclization reactions, or intramolecular addition reactions, can be used to form cycloalkenes. These reactions primarily form cyclopentenones, a cycloalkene that contains two functional groups: the cyclopentene and a ketone group. [12] However, other cycloalkenes, such as Cyclooctatetraene, can be formed as a result of this reaction. [11]

  7. Woodward cis-hydroxylation - Wikipedia

    en.wikipedia.org/wiki/Woodward_cis-hydroxylation

    The Woodward cis-hydroxylation (also known as the Woodward reaction) is the chemical reaction of alkenes with iodine and silver acetate in wet acetic acid to form cis-diols. [1] [2] (conversion of olefin into cis-diol) The reaction is named after its discoverer, Robert Burns Woodward. The Woodward cis-hydroxylation

  8. 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]

  9. Markovnikov's rule - Wikipedia

    en.wikipedia.org/wiki/Markovnikov's_rule

    The reaction of HBr with substituted alkenes was prototypical in the study of free-radical additions. Early chemists discovered that the reason for the variability in the ratio of Markovnikov to anti-Markovnikov reaction products was due to the unexpected presence of free radical ionizing substances such as peroxides.

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