Lab 6 - M. Farrell Matt Farrell October 23, 2006 Lab 6:...

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M. Farrell Matt Farrell October 23, 2006 Lab 6: Oxidation/Reduction Chemistry Purpose: The purpose of this experiment is to demonstrate reagents for oxidation and reduction. Oxidation will be carried out with pyridinium chlorochrome suspended on a mixture of sodium acetate and 4 Angstroms molecular sieve. Background: Oxidation is a common and widely used reaction in organic chemistry. Two of the most important and general oxidizing agents are chromic acid and potassium permanganate. Alcohol oxidations are usually carried out with chromic acid, H2CrO4. Potassium permanganate is more often preferred for side chain oxidations or cleavage of a carbon chain at a double bond or carbonyl group. Chromic Acid Reaction: Page 1 of 6
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M. Farrell Permanganate Oxidation: Balancing the equations is vital for the oxidation. The equation for chromic acid is completed by adding acid to balance charges and water to balance oxygen atoms: 3(CH 2 ) 2 CHOH +2H 2 CrO 4 6H + 3(CH 3 ) 2 C=O + 2Cr +3 + 8H 2 O Ethylbenzene with KMnO4 oxidation reaction: C 6 H 5 CH 2 CH 3 + 4MnO 4 - C 6 H 5 CO 2 - + 4MnO 2 + 2H 2 O + OH - + CO 3 -2 Chromic acids and its salts are suspected carcinogens so their use in other than small- scale reactions is not necessary. Pyridinium chlorochromate is used to convert primary alcohols in to the
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Lab 6 - M. Farrell Matt Farrell October 23, 2006 Lab 6:...

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