CHEM 227 Chapter 8: Chapter 8 Book Notes
31 Jul 2016
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Document Summary
The two most common elimination reactions are dehydrohalogenation (loss of a hx from an alkyl halide) and dehydration (the loss of water from an alcohol). Dehydration: carried out with the use of a strong acid and the solvent thf. Displays a bromonium ion intermediate instead of a carbocation. An anti addition reaction is one in which the two ends of the double bond are attached from different sides. An anti elimination reaction is one in which the two groups leave from opposite sides of the molecule. Halohydrins (addition of hox): the addition of hypohalous acids (ho-cl or ho- Br) happen indirectly with br2 or cl2 in the presence of water. Acid-catalyzed hydration of isolated double bonds is uncommon - it often involves the formation of an anion intermediate followed by protonation by an acid. Oxymercuration - involves a electrophilic addition of hg2+ to the alkene on reaction with mercury (ii) acetate in aqueous (thf) solvent.
