Chapter 10 Notes - C hapter 10 Notes Substitution and...

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Chapter 10 Notes – Substitution and Elimination Reactions of Alkyl Halides Substitution reaction: the electronegative atom or electron-withdrawing group is replaced by another atom or group Elimination reaction: the electronegative atom or electron-withdrawing group is eliminated, along with a hydrogen from an adjacent carbon Leaving group: the atom or group that is substituted or eliminated in these reactions 10.1 – How Alkyl Halides React - The more electronegative halogen has a larger share of electrons so it has a partial negative charge and the carbon to which it is bonded has a partial positive charge 10.2 – The Mechanism of an S N 2 Reaction - S – Substitution, N – Nucleophilic, 2 – Bimolecular - Two molecules are involved in the rate-determining step - The rate of the reaction depends on the concentration of the alkyl halide and of the nucleophile - When replaced with methyl groups, the reaction rate progressively slows - The reaction of an alkyl halide in which the halogen is bonded to an asymmetric center leads to the formation of only one stereoisomer - Steric hindrance causes primary alkyl halides to be the most reactive and tertiary halides to be un-reactive
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This note was uploaded on 09/12/2011 for the course CHEM 1315 taught by Professor Unknown during the Spring '07 term at Georgia Institute of Technology.

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Chapter 10 Notes - C hapter 10 Notes Substitution and...

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