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The Carbonyl Functional Groups. Suggested Problems: Chapter 14: 3-12 Chapter 15: 5-8. Chapter 14, 15, 16. The Carbonyl Group. A C=O group is called a carbonyl group Depending on what else is bonded to the carbonyl carbon, we have aldehydes, ketones, carboxylic acids, esters and amides.
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The Carbonyl Functional Groups Suggested Problems: Chapter 14: 3-12 Chapter 15: 5-8 Chapter 14, 15, 16
The Carbonyl Group • A C=O group is called a carbonyl group • Depending on what else is bonded to the carbonyl carbon, we have aldehydes, ketones, carboxylic acids, esters and amides
Aldehydes • The functional group of an aldehyde is a terminal carbonyl group (there is a hydrogen on the carbonyl carbon) • The generic formula of an aldehyde is
Examples: Aldehydes • An example of an aldehyde is acetaldehyde ethanal acetaldehyde
Naming Aldehydes • The suffix for aldehydes is “al”
Ketones • The functional group of a ketone is an internal carbonyl group (the carbonyl carbon is bonded to two alkyl groups) • The generic formula of a ketone is shown below • R and R’ may be the same alkyl groups, or they may be different
Naming Ketones • Acetone is the simplest ketone • The suffix for ketones is “one” propanone acetone
Carboxylic Acids • The functional group of carboxylic acid is the carboxyl group • Carboxyl = carbonyl + hydroxyl
Naming Carboxylic Acids • The suffix for carboxylic acids is “oic acid” • An example of a carboxylic acid is acetic acid ethanoic acid acetic acid
Esters • The generic formula of an ester is: • Esters are condensation products between carboxylic acids and alcohols
An Example of an Ester • An example of an ester is pentyl acetate, an artificial banana flavor O C H C H C H C H C H O C C H 3 2 2 2 2 3 pentyl ethanoate pentyl acetate
Examples of Esters acetyl salicylic acid (aspirin) methyl salicylate (wintergreen)
O O O R C N R 1 2 H NR2 R C O H R C NR2 R 3 Amides • The generic formula of an amide is: • Amides are condensation products between carboxylic acids and amines
An Example of an Amide • An example of an amide is acetaminophen, an analgesic acetaminophen Tylenol®
Summary of the Functional Groups No Naming of Amides and Esters
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