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  2. Hydrohalogenation - Wikipedia

    en.wikipedia.org/wiki/Hydrohalogenation

    A hydrohalogenation reaction is the electrophilic addition of hydrogen halides like hydrogen chloride or hydrogen bromide to alkenes to yield the corresponding haloalkanes. [ 1 ] [ 2 ] [ 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 fewer ...

  3. Hofmann–Löffler reaction - Wikipedia

    en.wikipedia.org/wiki/Hofmann–Löffler_reaction

    A number of examples of the Hofmann–Löffler–Freytag reaction under neutral conditions have been presented in the section devoted to modifications and improvements of the original reaction conditions. Hence, the main focus of this section are the applications of the Suárez modification of the Hofmann–Löffler–Freytag reaction.

  4. Halogenation - Wikipedia

    en.wikipedia.org/wiki/Halogenation

    In chemistry, halogenation is a chemical reaction which introduces one or more halogens into a chemical compound. Halide-containing compounds are pervasive, making this type of transformation important, e.g. in the production of polymers, drugs. [1]

  5. Haloform reaction - Wikipedia

    en.wikipedia.org/wiki/Haloform_reaction

    In chemistry, the haloform reaction (also referred to as the Lieben haloform reaction) is a chemical reaction in which a haloform (CHX 3, where X is a halogen) is produced by the exhaustive halogenation of an acetyl group (R−C(=O)CH 3, where R can be either a hydrogen atom, an alkyl or an aryl group), in the presence of a base.

  6. Syn and anti addition - Wikipedia

    en.wikipedia.org/wiki/Syn_and_anti_addition

    After addition to a straight-chain alkene such as ethene (C 2 H 4), the resulting alkane will rapidly and freely rotate around its single sigma bond under normal conditions (i.e. room temperature). Thus whether substituents are added to the same side (syn) or opposite sides (anti) of a double can usually be ignored due to free rotation.

  7. Alkene - Wikipedia

    en.wikipedia.org/wiki/Alkene

    Example of hydrohalogenation: addition of HBr to an alkene. Hydrohalogenation involves addition of H−X to unsaturated hydrocarbons. This reaction results in new C−H and C−X σ bonds. The formation of the intermediate carbocation is selective and follows Markovnikov's rule. The hydrohalogenation of alkene will result in haloalkane. The ...

  8. US FDA approves Ionis Pharma's genetic disorder drug - AOL

    www.aol.com/news/us-fda-approves-ionis-pharmas...

    A strict low-fat diet is the current first-line treatment for the condition. The disorder affects fewer than 5,000 people in the U.S., according to government data. "We don't see any hurdles on ...

  9. McMurry reaction - Wikipedia

    en.wikipedia.org/wiki/McMurry_reaction

    Note that the mechanism may vary when different conditions are used. Several mechanisms have been discussed for this reaction. [3] Low-valent titanium species induce coupling of the carbonyls by single electron transfer to the carbonyl groups. The required low-valent titanium species are generated via reduction, usually with zinc powder.