Textbook Question
Starting with methyl acetate, what neutral nucleophile would you use to synthesize each of the following compounds? b. acetamide
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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 13a
Bruice 8th EditionCh. 15 - Reactions of Carboxylic Acids and Carboxylic Acid DerivativesProblem 13aChapter 16, Problem 13a
Write the mechanism for each of the following reactions:
a. the reaction of acetyl chloride with water to form acetic acid
Verified step by step guidance1
Identify the functional groups involved: Acetyl chloride (CH3COCl) is an acid chloride, and water (H2O) is a nucleophile. Acid chlorides are highly reactive due to the electron-withdrawing nature of the chlorine atom, making the carbonyl carbon highly electrophilic.
Step 1: Nucleophilic attack. The lone pair of electrons on the oxygen atom of water attacks the electrophilic carbonyl carbon of acetyl chloride. This forms a tetrahedral intermediate where the carbon is bonded to the original groups (CH3, Cl, and OH2+).
Step 2: Collapse of the tetrahedral intermediate. The negatively charged oxygen from the water attack donates its lone pair back to reform the carbonyl group, causing the chloride ion (Cl⁻) to leave as a leaving group. This step generates acetic acid (CH3COOH) and a chloride ion.
Step 3: Proton transfer. The intermediate acetic acid molecule may initially have an extra proton on the hydroxyl group (OH2+). A proton transfer occurs, either intramolecularly or with the help of another water molecule, to neutralize the charge and form the final acetic acid product.
Review the overall reaction: The reaction converts acetyl chloride (CH3COCl) and water (H2O) into acetic acid (CH3COOH) and hydrochloric acid (HCl). This is a nucleophilic acyl substitution reaction, where the chloride group is replaced by a hydroxyl group.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Nucleophilic Acyl Substitution
Nucleophilic acyl substitution is a fundamental reaction mechanism in organic chemistry where a nucleophile attacks the carbonyl carbon of an acyl compound, leading to the substitution of the acyl group. In the case of acetyl chloride reacting with water, water acts as the nucleophile, attacking the carbonyl carbon of acetyl chloride, resulting in the formation of acetic acid and hydrochloric acid.
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Nucleophiles and Electrophiles can react in Substitution Reactions.
Acyl Chlorides
Acyl chlorides, also known as acid chlorides, are reactive compounds derived from carboxylic acids by replacing the hydroxyl group with a chlorine atom. They are highly reactive due to the presence of the electronegative chlorine atom, which makes the carbonyl carbon more susceptible to nucleophilic attack. Understanding their reactivity is crucial for predicting the outcome of reactions involving acyl chlorides.
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Hydrolysis Reactions
Hydrolysis reactions involve the reaction of a compound with water, leading to the breakdown of that compound. In organic chemistry, hydrolysis is often used to convert acyl chlorides into carboxylic acids. This reaction is typically exothermic and can be catalyzed by the presence of acids or bases, although in this case, water alone suffices to facilitate the conversion of acetyl chloride to acetic acid.
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Related Practice
Textbook Question
Write the mechanism for each of the following reactions:
b. the reaction of benzoyl chloride with excess methylamine to form N-methylbenzamide
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Textbook Question
Starting with methyl acetate, what neutral nucleophile would you use to synthesize each of the following compounds? a. ethyl acetate
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Textbook Question
Starting with acetyl chloride, what neutral nucleophile would you use to synthesize each of the following compounds?
e.
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Textbook Question
Starting with acetyl chloride, what neutral nucleophile would you use to synthesize each of the following compounds?
f.
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Textbook Question
Starting with acetyl chloride, what neutral nucleophile would you use to synthesize each of the following compounds?
d.
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