Textbook Question
Write the mechanism for the acid-catalyzed reaction of an amide with an alcohol to form an ester.
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Ch. 15 - Reactions of Carboxylic Acids and Carboxylic Acid Derivatives
Bruice8th EditionOrganic ChemistryISBN: 9780135213711
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Table of contents
- Ch. 1 - Remembering General Chemistry: Electronic Structure and Bonding (Part 1)31
- Ch. 1 - Remembering General Chemistry: Electronic Structure and Bonding (Part 2)65
- Ch. 2 - Acids and Bases: Central to Understanding Organic Chemistry84
- Ch. 3 - An Introduction to Organic Compounds:Nomenclature, Physical Properties, and Structure183
- Ch. 4 - Isomers: The Arrangement of Atoms in Space121
- Ch. 5 - Alkenes: Structure, Nomenclature, and an Introduction to Reactivity • Thermodynamics and Kinetics83
- Ch. 6 - The Reactions of Alkenes • The Stereochemistry of Addition Reactions175
- Ch. 7 - The Reactions of Alkynes • An Introduction to Multistep Synthesis119
- Ch. 8 - Delocalized Electrons: Their Effect on Stability, pKa, and the Products of a Reaction • Aromaticity and Electronic Effects: An Introduction to the Reactions of Benzene148
- Ch. 9 - Substitution and Elimination Reactions of Alkyl Halides212
- Ch. 10 - Reactions of Alcohols, Ethers, Epoxides, Amines, and Sulfur-Containing Compounds131
- Ch. 11 - Organometallic Compounds60
- Ch. 12 - Radicals90
- Ch. 13 - Mass Spectrometry; Infrared Spectroscopy; UV/Vis Spectroscopy62
- Ch. 14 - NMR Spectroscopy95
- Ch. 15 - Reactions of Carboxylic Acids and Carboxylic Acid Derivatives123
- Ch. 16 - Reactions of Aldehydes and Ketones • More Reactions of Carboxylic Acid Derivatives141
- Ch. 17 - Reactions at the Alpha-Carbon101
- Ch. 18 - Reactions of Benzene and Substituted Benzenes144
- Ch. 19 - More About Amines • Reactions of Heterocyclic Compounds49
- Ch. 20 - The Organic Chemistry of Carbohydrates80
- Ch. 21 - Amino Acids, Peptides, and Proteins57
- Ch. 22 - Catalysis in Organic Reactions and in Enzymatic Reactions35
- Ch. 23 - The Organic Chemistry of the Coenzymes—Compounds Derived from Vitamins1
- Ch. 28 - Pericyclic Reactions58
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Bruice 8th EditionCh. 15 - Reactions of Carboxylic Acids and Carboxylic Acid DerivativesProblem 33
Bruice 8th EditionCh. 15 - Reactions of Carboxylic Acids and Carboxylic Acid DerivativesProblem 33Chapter 16, Problem 33
What acyl chloride and amine are required to synthesize the following amides?
a. N-ethylbutanamide
b. N,N-dimethylbenzamide
Verified step by step guidance1
Step 1: Understand the structure of the amide. Amides are formed through a reaction between an acyl chloride and an amine. The general reaction is: \( \text{RCOCl} + \text{R'NH}_2 \rightarrow \text{RCONHR'} \). For each amide, identify the acyl group (RCO-) and the amine group (R'NH2).
Step 2: For N-ethylbutanamide, break down the name. 'Butanamide' indicates the acyl group is derived from butanoic acid (\( \text{CH}_3\text{CH}_2\text{CH}_2\text{COCl} \)). 'N-ethyl' indicates the amine group is ethylamine (\( \text{CH}_3\text{CH}_2\text{NH}_2 \)).
Step 3: For N,N-dimethylbenzamide, break down the name. 'Benzamide' indicates the acyl group is derived from benzoic acid (\( \text{C}_6\text{H}_5\text{COCl} \)). 'N,N-dimethyl' indicates the amine group is dimethylamine (\( \text{(CH}_3\text{)}_2\text{NH} \)).
Step 4: Write the reaction for each synthesis. For N-ethylbutanamide: \( \text{CH}_3\text{CH}_2\text{CH}_2\text{COCl} + \text{CH}_3\text{CH}_2\text{NH}_2 \rightarrow \text{CH}_3\text{CH}_2\text{CH}_2\text{CONHCH}_2\text{CH}_3 \). For N,N-dimethylbenzamide: \( \text{C}_6\text{H}_5\text{COCl} + \text{(CH}_3\text{)}_2\text{NH} \rightarrow \text{C}_6\text{H}_5\text{CON(CH}_3\text{)}_2 \).
Step 5: Verify the structures of the products match the given amides. Ensure the acyl chloride and amine reactants correspond to the correct functional groups in the amide products.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Acyl Chlorides
Acyl chlorides, also known as acid chlorides, are reactive organic compounds derived from carboxylic acids by replacing the hydroxyl group (-OH) with a chlorine atom. They are commonly used in organic synthesis due to their ability to react with nucleophiles, such as amines, to form amides. Understanding the structure and reactivity of acyl chlorides is essential for determining the appropriate acyl chloride needed for amide synthesis.
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01:57
Recognizing acyl chlorides and anhydrides.
Amines
Amines are organic compounds that contain nitrogen atoms bonded to carbon atoms. They can be classified as primary, secondary, or tertiary based on the number of carbon groups attached to the nitrogen. In the context of amide synthesis, the type of amine used (e.g., primary or secondary) influences the structure of the resulting amide. Recognizing the differences between these amines is crucial for selecting the correct amine for the desired amide product.
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Amide Formation
Amide formation is a chemical reaction where an acyl chloride reacts with an amine to produce an amide and hydrochloric acid as a byproduct. This reaction is a key transformation in organic chemistry, often utilized in the synthesis of pharmaceuticals and other compounds. Understanding the mechanism of this reaction, including the role of nucleophilicity and electrophilicity, is vital for predicting the products formed in the synthesis of specific amides.
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Related Practice
Textbook Question
Propose a mechanism for the following reaction. (Hint: Number the carbons to help you see where they end up in the product.)
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Textbook Question
Rank the following amides from greatest reactivity to least reactivity toward acid-catalyzed hydrolysis:
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Textbook Question
Show how each of the following esters could be prepared using a carboxylic acid as one of the starting materials:
a. methyl butyrate (odor of apples)
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Textbook Question
Which of the following reactions lead to the formation of an amide?
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Textbook Question
D. N. Kursanov, a Russian chemist, proved that the bond that is broken in the hydroxide-ion-promoted hydrolysis of an ester is the acyl C—O bond, rather than the alkyl C—O bond, by studying the hydrolysis of the following ester under basic conditions:
a. What products contained the 18O label?
b. What product would have contained the 18O label if the alkyl C—O bond had broken?
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