lab 10 discussion

lab 10 discussion - The purpose of this Nucleophilic...

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The purpose of this Nucleophilic Substitution lab was to develop an understanding of the reactivity of various alkyl halides with different nucleophiles and solvents. Both nucleophiles used in the experiment were weak bases and strong nucleophiles. Acetone was used as a solvent for the first part of the experiment, and ethanol was used in the other half. These conditions promote Sn2 reactions for all primary and secondary alkyl halides, and promote Sn1 reactions for tertiary alkyl halides. In reaction one of part one (see attached reaction equations), Bromine acts as a leaving group and iodine acts as a nucleophile. This is an Sn2 reaction. These same principles can be applied to equations two and five; both are primary alkyl halides. In the same reaction of part two, however, ethanol is used as the solvent. The reaction is slower because ethanol is a protic solvent and therefore reduces Sn2 reactivity. In reaction three, the secondary alkyl halide is attacked from the backside of the halide atom and an Sn2
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lab 10 discussion - The purpose of this Nucleophilic...

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