16 4 Naming Esters such as ethyl butanoate

16. 4 Naming Esters such as ethyl butanoate provide the odor and flavor of many fruits, such as pineapples. Learning Goal Write the IUPAC and common names for esters; draw condensed and line-angle structural formulas. General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake © 2016 Pearson Education, Inc.

Naming Esters The name of an ester consists of two words: 1. The first word indicates the alkyl part from the alcohol. 2. The second word is the carboxylate name of the carboxylic acid. General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake © 2016 Pearson Education, Inc.

Naming Esters have IUPAC and common names: General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake © 2016 Pearson Education, Inc.

Guide to Naming Esters General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake © 2016 Pearson Education, Inc.

Naming Esters What is the IUPAC name of the following ester? ANALYZE THE PROBLEM Given ester Need IUPAC and common name STEP 1 Write the name for the carbon chain from an alcohol as an alkyl group ethyl General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake © 2016 Pearson Education, Inc.

Naming Esters What is the IUPAC name of the following ester? STEP 2 Change the ic acid of the acid name to ate. ethyl propanoate ethyl propionate General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake © 2016 Pearson Education, Inc.

Study Check Give the IUPAC and common names for the following compound, responsible for the flavor and odor of pears: General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake © 2016 Pearson Education, Inc.

Solution Give the IUPAC and common names for the following compound, responsible for the flavor and odor of pears: ANALYZE THE PROBLEM Given ester Need IUPAC and common name STEP 1 Write the name for the carbon chain from an alcohol as an alkyl group. propyl General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake © 2016 Pearson Education, Inc.

Solution Give the IUPAC and common names for the following compound, responsible for the flavor and odor of pears: STEP 2 Change the ic acid of the acid name to ate. propyl ethanoate propyl acetate General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake © 2016 Pearson Education, Inc.

Esters in Fruits • Many of the fragrances of perfumes and flowers and the flavors of fruits are due to esters. • Small esters are volatile, so we can smell them, and they are soluble in water, so we can taste them. • The odor of grapes is due to ethyl heptanoate. General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake © 2016 Pearson Education, Inc.

Esters in Fruits and Flavoring General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake © 2016 Pearson Education, Inc.

Study Check Draw the condensed structural formulas for each of the following compounds: A. propyl pentanoate B. ethyl propionate General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake © 2016 Pearson Education, Inc.

Solution Draw the condensed structural formulas for each of the following compounds: A. propyl pentanoate B. ethyl propionate General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake © 2016 Pearson Education, Inc.