CHEM10006 Study Guide - Final Guide: Stepwise Reaction, Tautomer, Stereochemistry
30 Jul 2018
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Hydride shift: rearrangement occurs when an entire bonding pair of electrons migrates to a carbocation from one of its neighbors. This will be favorable when a new, more stable carbocation is formed: a migration of hydrogen with its lone pair is called hydride shift. Hydration of alkene: nucleophilic attack from alkene double bond to hydronium ion (formed between water and acid, nucleophilic attack from h2o (two lone pairs) to newly formed carbocation (one. C only has three bonds: nucleophilic attack from h2o (two lone pairs) to the h2o newly attached to the carbocation. When no nucleophile present another molecule of reactant will have nucleophilic attack to the newly formed carbocation (a successive process of making polymers) Benzene does not behave like an alkene; the -electrons are not localized between specific carbon atoms they are delocalized. Requirements for aromaticity: cyclic molecules, double bond has to be conjugated (alternating double and single bonds, planar (relate to the hybridization)
