CHEM 2211 Lecture Notes - Lecture 2: Leaving Group, Nucleophilic Aromatic Substitution, Silver Nitrate
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27 Feb 2018
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The purpose of this lab is to investigate how the identity of the leaving group, and the structure of the electrophile, and the polarity of the solvent system each affect both types of substitution reactions. The first portion of the experiment focuses on the effect of substrate substitution and leaving group identity under sn1 conditions. The second part of the experiment deals with the effect of substrate substitution and leaving group identity under sn2 conditions. The third part of the experiment deals with solvent polarity as it effects sn1 reactions. Nucleophilic substitution is characterized by the attack of a nucleophile on an electrophilic species and results in the displacement of the leaving group. The two mechanisms through which this can occur is unimolecular nucleophilic substitution and bimolecular nucleophilic substitution. A bimolecular reaction occurs in a single step while a unimolecular reaction occurs in two steps.
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