Friedel crafts - Patricia Mora Chem 3BL The Friedel Crafts Reaction The purpose of this lab is to produce a Friedel-Crafts reaction using biphenyl

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Patricia Mora Chem 3BL The Friedel- Crafts Reaction The purpose of this lab is to produce a Friedel-Crafts reaction using biphenyl to look at the alternatives to the formation of carbonyl groups. The H NMR spectra show three peaks, indicating that there are three different types of hydrogens in the product. The C NMR spectra shows six peaks, indicating six different carbons. From this we can assume that the molecule has symmetry. The peak around the metyl hydrogen region (about 1.4ppm) on the H NMR spectra indicates that the tert butyls on the product must also be symmetrical. If there was no symmetry between the methyl groups, there would be more than one peak in the methyl region. We can also conclude that the methyls on the aromatic ring are symmetrical because there were only three different hydrogens. The isomers of the product would have a larger number of non equivalent hydrogen. Additionally, the isomers would have a lot of different hydrogen and carbon peaks because of their lack of symmetry. Possible isomers:
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This note was uploaded on 03/13/2011 for the course CHEM 3BL taught by Professor Chunmei during the Spring '08 term at University of California, Berkeley.

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Friedel crafts - Patricia Mora Chem 3BL The Friedel Crafts Reaction The purpose of this lab is to produce a Friedel-Crafts reaction using biphenyl

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