Textbook Question
The following compound has been found to be an inhibitor of penicillinase. The enzyme can be reactivated by hydroxylamine (NH2OH). Propose a mechanism to account for the reactivation.
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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 87a
Bruice 8th EditionCh. 15 - Reactions of Carboxylic Acids and Carboxylic Acid DerivativesProblem 87aChapter 16, Problem 87a
What product do you expect to obtain from each of the following reactions?
a. 
Verified step by step guidance1
Step 1: Analyze the structure of the given compound CH3CH2(COH)CH2CH2CH2(C=O)OH. This molecule contains both an aldehyde group (-CHO) and a carboxylic acid group (-COOH). Identify the functional groups and their reactivity in the presence of HCl.
Step 2: Recognize that HCl is a strong acid and can protonate functional groups. In this case, the carboxylic acid group (-COOH) is already acidic, so it will not undergo significant change. However, the aldehyde group (-CHO) may undergo acid-catalyzed reactions such as hydration or polymerization.
Step 3: Consider the possibility of acid-catalyzed hydration of the aldehyde group. In the presence of HCl, the aldehyde group (-CHO) can react with water to form a geminal diol (a molecule with two hydroxyl groups attached to the same carbon). This reaction is reversible and depends on the reaction conditions.
Step 4: Evaluate the stability of the molecule after the reaction. The carboxylic acid group (-COOH) remains unchanged, while the aldehyde group may convert to a geminal diol. Write the expected product structure based on this transformation.
Step 5: For part b, clarify that no specific reactant is provided other than HCl. If the reactant is missing, the reaction cannot be analyzed. Ensure the student provides the complete reactant structure to proceed with the solution.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Functional Groups
Functional groups are specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules. In the given question, the presence of hydroxyl (-OH) and carbonyl (C=O) groups indicates that the compounds are alcohols and carboxylic acids, respectively. Understanding these functional groups is essential for predicting the products of the reactions.
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Identifying Functional Groups
Acid-Base Reactions
Acid-base reactions involve the transfer of protons (H+) between reactants. In the context of the reactions provided, HCl acts as a strong acid that can protonate functional groups, influencing the reactivity of the organic compounds. Recognizing how acids interact with alcohols and carboxylic acids is crucial for determining the expected products.
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Reaction Mechanisms
Reaction mechanisms describe the step-by-step process by which reactants transform into products. Understanding the mechanisms involved in the reactions with HCl, such as protonation and subsequent nucleophilic attack, is vital for predicting the final products. This knowledge helps in visualizing how the structure of the reactants changes during the reaction.
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Related Practice
Textbook Question
The following compound has been found to be an inhibitor of penicillinase. The enzyme can be reactivated by hydroxylamine (NH2OH). Propose a mechanism to account for the inhibition.
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Textbook Question
Show how the following compounds could be prepared from the given starting materials. You can use any necessary organic or inorganic reagents.
c.
Textbook Question
Show how the following compounds could be prepared from the given starting materials. You can use any necessary organic or inorganic reagents.
d.
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Textbook Question
The intermediate shown here is formed during the hydroxide-ion-promoted hydrolysis of the ester group. Propose a mechanism for the reaction.
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Textbook Question
Show how the following compounds could be prepared from the given starting materials. You can use any necessary organic or inorganic reagents.
b.
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