CH19 April 18

CH19 April 18 - Examples Identify the acyl group and then...

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Polyesters Dacron (Mylar): Ethylene Glycol Dimethyl Terephthalate Generalized Dacron/Mylar Fiber Title: Page %d of %d
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Let's Draw Kevlar: Starting Materials 1,4­diaminobenzene 1,4­benzenedicarboxylic acid Kevlar Fragment Title: Page %d of %d
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Spectroscopy of Carboxylic Acid Derivatives Infrared Absorptions: Title: Page %d of %d
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Spectroscopy of Carboxylic Acid Derivatives Proton NMR: The presense of a carbonyl group deshields the H's on adjacent carbons. It is difficult to determine the exact carbonyl structure using IR alone. NMR uses the resulting chemical shifts to help make a final structure determination. Title: Page %d of %d
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Nomenclature of Carboxylic Acid Derivatives: 1. Thioesters: Examples: Named just like their ester equivalents: If the ester has a common name, the prefix "thio" is added to the carboxylate If the ester has a systematic name, the ­oate or ­carboxylate ending is replaced with ­thioate or ­carbothioate Title: Page %d of %d
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Nomenclature of Carboxylic Acid Derivatives: 1. Acyl Phosphates:
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Unformatted text preview: Examples: Identify the acyl group and then add the word "phosphate" If an alkyl group is attached to one of the phosphate oxygens, it is added after the name of the acyl group Title: Page %d of %d Chapter 22 ­ Carbonyl Alpha­Substitution Reactions General Overview: General Reaction Scheme: The carbon adjacent to a carbonyl is designated as the alpha ( α )­carbon Electrophilic substitution occurs at the alpha ( α ) position via one of two possible intermediates: Title: Page %d of %d Keto­Enol Tautomerism The Difference Between Tautomers and Resonance Forms: The Difference Between Tautomers and Conventional Structural Isomers: A carbonyl compound with a hydrogen on its α-carbon rapidly equilibrates with its enol tautomer Tautomers are structural isomers Resonance forms are representations of contributors to a single structure Tautomers interconvert rapidly while ordinary isomers do not Title: Page %d of %d Enols: Title: Page %d of %d...
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This note was uploaded on 05/08/2008 for the course CHEM 2212 taught by Professor Habbard during the Spring '08 term at UGA.

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CH19 April 18 - Examples Identify the acyl group and then...

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