Textbook Question
What products would you expect to obtain from the following reactions?
a. malonic acid + 2 acetyl chloride
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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 59b
Bruice 8th EditionCh. 15 - Reactions of Carboxylic Acids and Carboxylic Acid DerivativesProblem 59bChapter 16, Problem 59b
What products would you expect to obtain from the following reactions?
b. methyl carbamate + methylamine
Verified step by step guidance1
Identify the functional groups in the reactants: Methyl carbamate is a carbamate functional group (R-O-C(=O)-NR2), which is a derivative of carbamic acid. Methylamine is a primary amine (CH3NH2). The reaction involves nucleophilic substitution or addition-elimination mechanisms.
Understand the reactivity of the carbamate group: The carbonyl carbon in the carbamate group is electrophilic due to the partial positive charge on the carbon atom. This makes it susceptible to attack by nucleophiles like methylamine.
Propose the mechanism: Methylamine, as a nucleophile, will attack the electrophilic carbonyl carbon of the methyl carbamate. This leads to the formation of a tetrahedral intermediate.
Determine the leaving group: In the tetrahedral intermediate, the -OCH3 group (methoxy group) is a good leaving group. It will depart, leading to the formation of a new product where the methylamine has replaced the methoxy group.
Predict the products: The reaction will yield N-methylurea (CH3NHCONHCH3) as the main product, along with methanol (CH3OH) as a byproduct from the departure of the methoxy group.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Carbamate Structure and Reactivity
Carbamates are esters of carbamic acid, characterized by the functional group -O-C(=O)-NH2. They can undergo nucleophilic substitution reactions, where the amine can attack the carbonyl carbon, leading to the formation of new products. Understanding the structure helps predict how they will react with nucleophiles like methylamine.
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Nucleophilic Substitution Mechanism
Nucleophilic substitution is a fundamental reaction mechanism in organic chemistry where a nucleophile replaces a leaving group in a molecule. In the case of methyl carbamate reacting with methylamine, the amine acts as a nucleophile, attacking the electrophilic carbon of the carbamate, which can lead to the formation of a new amide or urea derivative.
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Amine Reactivity
Amines are basic organic compounds that can act as nucleophiles due to the presence of a lone pair of electrons on the nitrogen atom. In this reaction, methylamine can react with the electrophilic carbon of the carbamate, resulting in the formation of a new product. The reactivity of amines is crucial for predicting the outcome of reactions involving carbamates.
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Related Practice
Textbook Question
What reagents would you use to convert methyl propanoate to the following compounds?
c. N-ethylpropanamide
d. propanoic acid
Textbook Question
A compound with molecular formula C5H10O2 gives the following IR spectrum. When it undergoes acid-catalyzed hydrolysis, the compound with the 1H NMR spectrum shown below is formed. Identify the compounds.
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Textbook Question
What reagents would you use to convert methyl propanoate to the following compounds?
a. isopropyl propanoate
b. sodium propanoate
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Textbook Question
Aspartame, the sweetener used in the commercial products NutraSweet and Equal, is 200 times sweeter than sucrose. What products will be obtained if aspartame is hydrolyzed completely in an aqueous solution of HCl?
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Textbook Question
What products would you expect to obtain from the following reactions?
c. urea + water
d. β-ethylglutaric acid + acetyl chloride + Δ
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