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Carboxylic Anhydrides, Esters and Amides. Naming Anhydrides Drop the word acid and say anhydride.

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Presentation on theme: "Carboxylic Anhydrides, Esters and Amides. Naming Anhydrides Drop the word acid and say anhydride."— Presentation transcript:

1 Carboxylic Anhydrides, Esters and Amides

2 Naming Anhydrides Drop the word acid and say anhydride

3 Naming Esters Name the alkyl group bonded to the oxygen Then name the acid part but change the ending from oic acid to oate

4 Naming Amides Drop the oic acid part and say amide

5 Formation of Esters

6 Amides: Preparation Addition of ammonia results in an ammonium salt: ammonium salt Heating will remove a water and give the Amid This is not the most common way

7 Formation of Amides Anhydride + amine = amide + acid Do The YouTube

8 Reactions Hydrolysis of esters with acid Hydrolysis of esters with base (saponification) Reaction of Anhydrides with Alcohol Reaction of Esters with ammonia

9 Hydrolysis of Ester with Acid Hydrolysis breaks a carboxyl bond by addition of water, alcohol, or amine

10 Hydrolysis of Esters Hydrolysis = Reverse of esterification –Acid or base catalyzed –Produces acid and alcohol 1 o alcohol B

11 Hydrolysis of Esters with Base Base catalyzed hydrolysis (saponification) 1 o alcohol B

12 Reaction of Anhydrides with Alcohols EsterAcid

13 Reaction of Esters with Ammonia

14 Phosphoric Anhydrides Anhydrides of Phosphoric Acid The phosphorus structure is very common in biological systems For example - the phosphate portion of DNA B anhydride form H 3 PO 4

15 Phosphoric Anhydrides Anhydrides of Phosphoric Acid B

16 Phosphoric Anhydrides Anhydrides of Phosphoric Acid –Contain HIGH ENERGY bonds (linkages) Release of energy when broken B

17 Phosphoric Anhydrides Anhydrides of Phosphoric Acid –Esters found in Biochem reactions –ATP, ADP, etc. 1 o alcohol B As these bonds break, energy is released.


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