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5.10 Structure of Esters An ester is a carboxylic acid with the acidic H replaced with an R group
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5.11 Preparation of esters Esters are produced from the condensation of a carboxylic acid and alcohol
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Preparation of esters movie D:\Movies\ester acid esterification.mov
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Fig. 5.12 5.12 Naming esters Alcohol name + acid root “ate” Esters have an alcohol part and an acid part NAME:
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Table 5.4 Esters that are used as flavoring agents
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5.13 Common Esters 1.Alcohol 2.Acid
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5.14 Isomerism in Carboxylic acids and esters Constitutional isomers exist between carboxylic acids and esters Constitutional isomers exist between esters
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Table 5.5 Boiling points of compounds with similar molecular weights 5.15 Physical properties of esters
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Fig. 5.14 Ester-water hydrogen bonding
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→Fig. 5.15 Methyl and ethyl esters of unbranched-chain carboxylic acids at room temperature and pressure. Carboxylic Acids, Esters, and Other Acid Derivatives cont’d
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5.16 Reactions of Esters Hydrolysis Reactions 1. Acid hydrolysis
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2. Base hydrolysis (saponification) Movies\ester base hydrolysis.mov
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5.17 Sulfur analogs of esters E.g., Acetyl coA 5.18 Polyesters…..skip
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5.19 Acid anhydrides Acid anhydrides can be organic or inorganic or both 1. Organic 2. Inorganic
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3. Organic and inorganic 1,3-bisphosphoglycerate Mixed anhydride bond Phosphate ester bond Glyceric acid
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5.20 Esters of inorganic acids Custom Medical Stock Photo
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