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Hydrohalogenation
also called Addition of HX to an alkene

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  1. reaction is the electrophilic addition of hydrohalic acids like hydrogen chloride or hydrogen bromide to alkenes to yield the corresponding haloalkanes

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on March 12, 2009
  2. Recent research has found that adding silica gel or alumina to H-Cl (or H-Br) in dichloromethane increases the rate of reaction making it an easy one to carry out

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on March 12, 2009
  3. If the two carbon atoms at the double bond are linked to a different number of hydrogen atoms, the halogen is found preferentially at the carbon with less hydrogen substituents, an observation known as Markovnikov's rule

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on March 12, 2009
  4. In the presence of peroxides (chemicals containing the general structure ROOR'), HBr adds to a given alkene in an anti-Markovnikov fashion

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on March 12, 2009
  5. This is due to an intermediate which is produced by the abstraction of a hydrogen atom by the alkene from the acid (HBr) to form the most stable carbocation(relative stability: 3o>2o>1o>methyl), as well as generating a Br anion: The subsequent reacti

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on March 12, 2009
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