ESTERS Mo and Lana RCOOR’. Esters  Structure of ester:  4 th on priority list 1 st : Cations 2 nd : Carboxylic Acids 3 rd : Acid Anhydrides 4 th : Esters.

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Presentation transcript:

ESTERS Mo and Lana RCOOR’

Esters  Structure of ester:  4 th on priority list 1 st : Cations 2 nd : Carboxylic Acids 3 rd : Acid Anhydrides 4 th : Esters RCOOR’

Esterification- How to make an ester Carboxylic Acid AlcoholEsterWater

Naming  Esters have two parts to their names Part 1: the group that came from the alcohol  Everything right of single bonded O, name as attached group (using yl and priority) Part 2: the group that came from the carboxylic acid  Everything to the left of the O, drop e and add -- -oate. Note: Esters are drawn with the carboxylic acid first and then the alcohol but they are written with the alcohol first and carboxylic acid second

EthylEthanoate

Practice- NAME THESE

ANSWERS Ethyl nonanoate “Grape” Ethyl penanoate “Apple”

Practice- DRAW THESE  Methyl penanoate “Flowery”  Methyl benzoate “Fruity”

ANSWERS  Methyl penanoate “Flowery”  Methyl benzoate “Fruity”

Uses Artificial and natural flavors and smells Such as: -Fruits -Flowers -Candy

No Apple Pie No Pecan Pie  Ingredients  2 cups water  1 ½ cups white sugar  1 ½ teaspoons cream of tartar  1 tablespoon butter  Cinnamon  Approx. 30 Ritz crackers  Pie shells  Ingredients  9-in pre-made refrigerator crust  1 1/2 cups sugar  1 stick butter or margarine  2 eggs  1/2 cup coconut  1/2 cup and 1 Tbsp mashed pinto beans  1 tsp vanilla extract

No Apple/ Pecan Pie Science  Cream of Tartar + Sugar + heat = Apple Ester!!  Ritz Crackers look like cooked apples  Pinto Beans = Pecan Pie Texture  Sugar = Pecan Pie Flavor