Esters and Esterification. Esters produced by combining carboxylic acid and alcohol (esterification) Large chain esters account for flavor and odor.

Slides:

Advertisements

Similar presentations

Creating an Ester Year 10 Science.

Advertisements

Hydrocarbon Derivatives molecular compounds of carbon and hydrogen that contain at least one other element. ex) alkyl halide, alcohol, carboxylic acid,

Other Organic Compounds. Hydrocarbon derivatives are organic molecules that contain one or more elements in addition to carbon and hydrogen.

TOPIC 11 ORGANIC CHEMISTRY (orgo)

AN ester is simply an oxygen bonded between two hydrocarbon atoms.

Esters and Esterification. Write condensed structural formulas for and name esters. Include: uses and functions of common esters Additional KEY Terms.

1 Carboxylic Acids, Esters, Amines and Amides Carboxylic Acids Properties of Carboxylic Acids Esters Esterification and Hydrolysis.

Carboxylic Acids. A carboxylic acid contains a carboxyl group, which is a carbonyl group attach to a hydroxyl group. carbonyl group O  CH 3 — C—OH hydroxyl.

Revision of Formation of Esters Formed from:- Formed from:- Carboxylic Acid Carboxylic Acid.

General Structure O R – C – O – R’ The general formula of an ester is written as RCOOR’ Where RCO = carboxylic acid And where OR’= alcohol ||

Timberlake: General, Organic & Biological Chemistry Copyright ©2010 by Pearson Education, Inc. SAMPLE PROBLEM16.1 Naming Carboxylic Acids SOLUTION a. STEP.

Esters of Carboxylic Acids 17.5 Naming Esters 17.6 Properties of Esters Chapter 17 Carboxylic Acids And Esters.

Higher Chemistry Unit 2 Multiple Choice Questions Section 6 Esters

Chapter 16 Carboxylic Acids and Esters

Chapter 16 and GHW#6 Questions Carboxylic Acids, Esters, and Other Acid Derivatives.

1 Lecture 6: Carboxylic Acids and Esters 16.1 Carboxylic Acids Copyright © 2007 by Pearson Education, Inc. Publishing as Benjamin Cummings.

1 Functional Groups: - Carboxylic Acids - Esters - Amides - Aldehydes - Ketones - Amines Mr. Shields Regents Chemistry U17 L02.

26-3: Carboxylic Acids and Esters

Carboxylic Acids and Esters,

OH – C – CH 2 – C – CH 2 – C – OH O║O║ O ║ HO – C O║O║ OH.

Carboxylic Acids. The functional group of carboxylic acids is the carboxyl group - general form: R - COOH O O C R H O carbonyl group hydroxyl group.

Unit 2 Esters. Go to question Which of the following compounds is an ester? a. b. c. d.

Esters Organic compound formed by the condensation reaction of a carboxylic acid and an alcohol. O O R-C-OH + R-OH R-C-O-R’ + H2O (ester)

Hydrocarbon Derivatives Chemistry 11. Hydrocarbon Derivatives Are formed when one or more hydrogen atoms is replaced by an element or a group of elements.

Carboxylic acids. Starter Which of the following formulae represent carboxylic acids? 1.CH 3 CH 2 CH(CH 3 )COOH 2.(CH 3 ) 2 CHCHO 3.CH 3 CH 2 OH 4.C 6.

Esters The smelly compounds. What are Esters?  A group of compounds that are responsible for some natural and synthetic flavours  They are often found.

Esters We are learning to:- Name and describe the production of esters.

Carboxylic Acids Carboxylic acids contain a carboxyl group: O CH 3 C-O-H ORCH 3 CO 2 H Carboxyl group.

Topic: Functional Group #7: Esters Do Now:. Esters General format R and R ‘ = hydrocarbon branches – Can be same or different Esters contain carbonyl.

Hydrocarbon Derivatives: Carboxylic Acids, Esters, Ethers, Amines and Amides SCH4U Spring 2012.

Unit 2 Esters. Go to question Which of the following compounds is an ester? The structural formula of the ester formed between ethanol.

Describe the hydrolysis of esters.

10.4 Carboxylic Acids Esters Esterfications. Carboxylic acids A carboxylic acid is an organic compound that contains the carboxyl group. Examples include.

Higher Chemistry Unit 2 Section 6 - Esters Multiple Choice Questions This is designed to be used by teachers to help students develop skills in answering.

Functional Groups. Halocarbons Aka Organic Halides contains 1 or more halogen atom general formula: R-X (where R is a carbon chain and X is a halogen)

Names and Formulae Remember the pattern in naming chains of hydrocarbons 1 Carbon = methane CH 4 2 Carbons = ethane C 2 H 6 3 Carbons = propane C 3 H.

Week 4 © Pearson Education Ltd 2009 This document may have been altered from the original Explain the water solubility of carboxylic acids. Describe the.

1.6 Carboxylic Acids and Esters

Ch. 14: Carboxylic Acids, Esters, Amines and Amides

CARBOXYLIC ACID AND ESTERS

Organic Chemistry Functional Groups: - Aldehydes - Ketones

ESTERS. What is an ester? Responsible for tastes and odours. Contain the ester linkage Made from an alcohol and a carboxylic acid. Since the C=O group.

PROBLEMS CH 16. Learning Check Give the IUPAC and common names for the following. A. B. C.

Chemistry: An Introduction to General, Organic, and Biological Chemistry, Eleventh Edition Copyright © 2012 by Pearson Education, Inc. Chapter 14 Carboxylic.

Functional Groups: - Aldehydes - Ketones - Organic Acids - Esters.

Carboxylic Acids & Esters

Hydrocarbon Derivatives Aldehydes Ketones Carboxylic Acids Esters.

Carboxylic acids and Esters

Carboxylic acids.

Sample Problem 16.1 Naming Carboxylic Acids

Chapter 1.6 Carboxylic Acids, Esters, and Fats

The Reaction between a Carboxylic acid and an Alcohol-Esterification

FUNCTIONAL GROUPS.

Chapter 16 Carboxylic Acids and Esters

UNIT 2 NATURES’ CHEMISTRY

The Wonderful World of Esters

16.4 Naming Esters Esters such as ethyl butanoate provide the odor and flavor of many fruits, such as pineapples. Learning Goal Write the IUPAC and common.

Alkanoic acids and Esters

Carboxylic acids [O] [O] 1o alcohol aldehyde carboxylic acid methanol

1.6 CARBOXYLIC ACIDS, ESTERS, AND FATS

PROBLEMS CH 16.

CH3COOH Ethanoic acid Carboxylic Acids

Chapter 16 Carboxylic Acids and Esters

CH3COOH Ethanoic acid Carboxylic Acids

Esters and Esterification

Carboxylic Acids and Esters

Presentation transcript:

Esters and Esterification

Esters produced by combining carboxylic acid and alcohol (esterification) Large chain esters account for flavor and odor of fruits.

General formula: R–COOR' R - hydrocarbon chain from the acid R' - hydrocarbon chain from the alcohol.

alcohol carboxyl acid H C-C O O H O-C ester water

Esterification is a reversible reaction. De-esterification reaction esterification reaction H O H O-C C-C O + ester alcohol carboxyl acid H C-C O O H O-C

· First name alcohol: change "anol" to "yl" · Second name acid: change "ioc acid" to "oate" Naming Esters 2 – names: CH 3 COOCH 2 CH 2 CH 3 propyl ethanoate CH 3 -C O \ O-CH 2 CH 2 CH 3 // alcohol acid

CH 3 CH 2 CH 2 CO + OCH 3 butanoic acid methanol CH 3 CH 2 CH 2 COOCH 3 + H 2 O methyl butanoate water OHH

CH 3 CH 2 CH 2 CH 2 CH 2 COOCH 2 CH 2 CH 2 CH 3 butyl hexanoate

Write the esterification reaction for the reaction between pentanoic acid and 1-butanol.

Esters are polar molecules but have NO hydrogen bonding (unlike alcohols, carboxylic acids, water) Bp / mp are higher than aliphatics but lower than acids and alcohols. Esters are soluble in water.

Esterification carboxylic acid and an alcohol that produces an ester and water. General formula RCOOR' ( R acid, R' alcohol). Name is two words: the alkyl group from alcohol, then acid with replaced ending - oate. Polar but do not hydrogen bond. Lower melting points and boiling points than acids and alcohols. Soluble in water.

Hydroxide ions also catalyze the breakdown of esters. salt