Lab #3 De- and Hydrogenation

Lab #3 De- and Hydrogenation - Atif Saleem ID 19546129...

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Atif Saleem, ID # 19546129, 03-02-2009, Section 101, GSI: Jason Hudak Chemistry 3BL Lab # 3: A Dehydrogenation/Hydrogenation Reaction Introduction: The purpose of the Dehydrogenation/Hydrogenation Lab is to dehydrogenate the molecule: montoterpene carvone with Paladium over Carbon and heat to yield a phenol. This final product, the phenol, will be analyzed using NMR and TLC results to decipher it’s structure. In order to create the product, however, it will be necessary to complete a series of reactions. These include adding the Paladium over Carbon to the (R)-Carvone, then diluting the reaction with hexane, adding sodium hydroxide, and then hydrochloric acid to the solution. After completing each of these reactions, the product will be obtainable. Discussion: Along with hydrogenation comes its reverse reaction, or dehydrogenation. In this reaction process, palladium over carbon is added to an organic molecule along with heat to yield aromatic compounds as well as hydrogen depending on the conditions. The following example is from page 93 of the spring 2009 Chemistry 3B lab manual by Steven F. Pedersen and Arlyn M. Myers: The steps used to isolate and purify the compound are as follows: upon addition of (R)-Carvone to
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This note was uploaded on 02/04/2010 for the course CHEM 3BL taught by Professor Chunmei during the Spring '08 term at Berkeley.

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Lab #3 De- and Hydrogenation - Atif Saleem ID 19546129...

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