the magtrieve oxidation

the magtrieve oxidation - Patricia Mora Chem 3BL The...

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Patricia Mora Chem 3BL The Magtrieve Oxidation of a 4-Chlorobenzyl Alcohol: A “Solvent-Free” Reaction With this experiment, several phase changes were observed during the process of solidifying and crystallizing the product. First, the sand bath heated the reaction to a temperature higher than the melting point of 4-chlorobenzyl alcohol (70-72°C), allowing it to liquefy and react with Magtrieve. Magtrieve then oxidized the 4-chlorobenzyl alcohol to form 4 chlorobenzaldehyde. Since the reaction temperature was greater than the melting point of the aldehyde (observed in the experiment to be about 44.5-46.2°C) and because of the aldehyde’s high vapor pressure, it evaporated and separated from the starting material. Once the aldehyde vapor touched the cold surface of the watchglass, it solidified into needle-like crystals. (This phase change is known as deposition.) It is necessary for the watchglass to stay cold so that the crystals can develop. The drop in temperature rapidly decreases the energy of the vapor, allowing the crystals to form. The crystals are then
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the magtrieve oxidation - Patricia Mora Chem 3BL The...

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