p-Aminobenzoic Acid

p-Aminobenzoic Acid Blake Thilmony*, Dillon Hofsommer Department of Chemistry, trades union Dakota State University, P.O. Box 6050, Fargo, North Dakota 58102 *Blake.M.Thilmony@my.ndsu.edu accepted March 28, 2011 ____________________________________________________________ ____________ P- aminobenzoic acid was synthesized with a three- rate reaction involving the adjunct and remotion of a cherishing stem, to result in a mellow yield when oxidation occurs. The synthesis was followed by the closing off and analysis of the crossing employ methods of vacuum filtration and NMR spectroscopy. The test had whatsoever errors during synthesis involving transferring and formation of byproducts and impurities, and resulted in a secondary 48.9% yield. ____________________________________________________________ ____________ Introduction1 The break up of this experiment was to prepare the vitamin p-aminobenzoic acid, or para aminobenzoic acid. PABA is an authori sed instalment in biological lickes and, due to its dexterity to absorb the ultraviolet component of solar radiation, it is also important in sun blocker preparation. The vitamin is prepared in high yield by process of three reactions. The first of which is the renewing of commercially available p-toluidine into N-acetyl-p-toluidine.

The metre method for preparing amides was used. The amine was acetylated to protect the amino convention during the permanganate oxidation done next. This step was essential to the percent yield of the product. out-of-pocket to this protection group, the methyl group is oxidized during the second step, using potassium perm! anganate as the oxidizing agent, without destroying the amino functional group. This step converts a violet solution of permanganate ion to a brown manganese dioxide precipitate. The product of this reaction is a salt, which past yields a carboxylic acid with acidification that precipitates out of the solution. The final step of the procedure was the hydrolysis of the amide functional group in dilute...If you want to shorten a full essay, society it on our website: BestEssayCheap.com

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