reportorgchem - Goals and Methods of this Week's Lab...

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Goals and Methods of this Week’s Lab Experiment: Cyclohexenes’ Acid Catalyzed Alcohol Dehydration The purpose of this lab is to dehydrate cyclohexanol into cyclohexene using the acid catalysis of phosphoric acid. To achieve this, distillation is used, as well as progressive removal of distillate to encourage the reaction to move in the forward direction. Also, drying agents are used to remove water from the product. The product is tested with bromine and the Baeyer’s test to characterize it. Also, the presence of the –OH group is checked with the IR spectrometer. The acid catalyzed dehydrogenation proceeds as follows. First the acid protonates the alcohol. Then, a water molecule comes off. The acid conjugate base pulls of a hydrogen, forming a double bond. This process happens usually by an E1 mechanism. This reaction also proceeds in the reverse direction as follows: The hydrogen’s that were lost earlier come back to the molecule. The double bond of the unsaturated compound
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reportorgchem - Goals and Methods of this Week's Lab...

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