Esters
Ben, Scott, Rachel, Parker
1st Period
Esters basic structure
Characteristics
 Colorless
 “volatile”
liquids
 Gives off pleasant aroma
 Used for food flavorings
 Occur as animal fats and vegetable oils
Nomenclature
IUPAC rules for naming esters:
Systematic
names of esters are based on the name of the
corresponding carboxylic acid.
The alkyl group is named using the -yl ending. This is followed by
a space. The acyl portion of the name is named by replacing the
-ic acid suffix of the carboxylic acid with -ate.
CH3COOH
+
-------------
Ethanoic
Acid
(Acetic acid)
isopropyl alcohol
(isopropyl acetate)
isopropyl ethanoate
Nomenclature
 Here
are some more examples:
Mechanisms

Esterification is typically used to convert carboxylic
acids to their ester forms
 Hydrolysis
is the process by which Esters
are broken down into their parent
compounds.
Mechanisms con…

Amide Preparation: amide compounds are
formed from esters using heat and an amine
compound (NH)

Dacron Polymerization- polyester- large chains of
molecules formed from smaller molecules.
Examples of Esters
 Fruits
 Perfume
 Flowers
 Soap
 Sodium
Propanoate
 Isopentyl Acetate
 Methyl Propanoate
What can esters be used for?



Esters are organic compounds formed when an
acid and an alcohol combine and release water.
Larger esters, which are formed from long-chain
carboxylic acids, can be animal and vegetable
fats, oils, and waxes.
Plexiglas, which is a stiff transparent plastic, is
made from long chains of esters.
Esters and the real world





Smaller esters create the fragrances and flavors of
many flowers and fruits.
Esters can also be used for food flavorings.
Esters are known for their sweet fragrance and
taste.
Esters can be used for the artificial flavoring of
pineapple. Pears, oranges, bananas, pineapple,
apple, and strawberry are helped by esters to get
their pleasant aroma or taste.
Without esters many of these fruits would not taste
or smell nearly as good and fruits are vital to a
healthy body.
Multiple Choice Questions
1.
Which of the following is esters general
structure?
A.
C.
B.
D.
Multiple Choice Questions
Which of the following is a
characteristic of ester?
A.
Has a Color
B.
Causes blindness
C.
Used for food flavorings
D.
Gives off an unpleasant aroma
2.
Multiple Choice Questions
Hydrolysis is the process by which Esters
A. are separated by their parent
compounds.
B. destroy their parent compounds.
C. are broken down into their parent
compounds.
D. None of the above
3.
Multiple Choice Questions
Which of the following is NOT a rule for
naming ester?
A. The acyl portion of the name is named by
replacing the -ic acid suffix of the carboxylic
acid with -ite
B. The alkyl group is named using the -yl ending
C. . Systematic names of esters are based on the
name of the corresponding carboxylic acid.
D. All of the above
4.
Multiple Choice Questions
Which of the following is NOT an
example of ester?
A. Fruits
B. Flowers
C. Soap
D. Salt
5.
Work Cited

http://www.enotes.com/chemistry/q-and-a/what-volatileliquids-252818

http://www.thefreedictionary.com/ester

http://butane.chem.uiuc.edu/cyerkes/Chem104A_BFA05/
Genchemref/nomenclature_rules.html


http://www.chemvip.com/index/products_index/all_products/
all_products_solvents/product-isopropyl_acetate.htm

http://www.mhhe.com/physsci/chemistry/carey/student/olc/c
h20reactionsesters.html