Textbook Question
Amino acids exist predominantly in one of the following forms. Which is it? Explain your answer.
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Ch. 4 - Acids and Bases: Electron Flow
Mullins1st EditionOrganic Chemistry: A Learner Centered ApproachISBN: 9780137566471
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Table of contents
- Ch. 2 - General Chemistry Translated: Finding the Electrons114
- Ch. 3 - Alkanes and Cycloalkanes: Properties and Conformational Analysis109
- Ch. 4 - Acids and Bases: Electron Flow144
- Ch. 5 - Chemical Reaction Analysis: Thermodynamics and Kinetics118
- Ch. 6 - Stereoisomerism: Arrangement of Atoms in Space112
- Ch. 7 - Principles of Green (Organic) Chemistry3
- Ch. 8 - Alkenes I: Properties and Electrophilic Additions158
- Ch. 9 - Alkenes II: Oxidation and Reduction150
- Ch. 10 - Alkynes: Electrophilic Addition and Redox Reactions101
- Ch. 11 - Properties and Synthesis of Alkyl Halides: Radical Reactions108
- Ch. 12 - Substitution and Elimination: Reactions of Haloalkanes172
- Ch. 13 - Alcohols, Ethers and Related Compounds: Substitution and Elimination239
- Ch. 14 - Structural Identification I: Infrared Spectroscopy and Mass Spectrometry54
- Ch. 15 - Structural Identification II: Nuclear Magnetic Resonance Spectroscopy93
- Ch. 16 - Metals in Organic Chemistry48
- Ch. 17 - Carbonyl Addition Reactions: Aldehydes and Ketones45
- Ch. 18 - Nucleophilic Acyl Substitution I: Carboxylic Acids18
- Ch. 19 - Nucleophilic Acyl Substitution II: Carboxylic Acid Derivatives39
- Ch. 20 - Enolates: Carbonyl Addition and Substitution13
- Ch. 21 - Conjugated Systems I: Stability and Addition Reactions56
- Ch. 22 - Conjugated Systems II: Pericyclic Reactions54
- Ch. 23 - Benzene I: Aromatic Stability and Substitution Reactions64
- Ch. 24 - Benzene II: Reactions Influenced by the Aromatic Ring62
- Ch. 25 - Amines: Structure, Reactions, and Synthesis27
- Ch. 26 - Amino Acids, Proteins, and Peptide Synthesis9
- Ch. 27 - Carbohydrates, Nucleic Acids, and Lipids54
Mullins1st EditionOrganic Chemistry: A Learner Centered ApproachISBN: 9780137566471Not the one you use?Change textbook
Chapter 3, Problem 66f
For each of the following molecules, predict the product that would form upon reaction of a single equivalent of a strong base.
(f) 
Verified step by step guidance1
Identify the functional groups in the molecule. Look for acidic protons, such as those on alcohols, phenols, carboxylic acids, or alpha-hydrogens adjacent to carbonyl groups, as these are most likely to react with a strong base.
Determine the strength of the base and its ability to deprotonate the molecule. A strong base, such as hydroxide (OH⁻) or alkoxide (RO⁻), will preferentially remove the most acidic proton in the molecule.
Locate the most acidic proton in the molecule. For example, alpha-hydrogens (hydrogens on carbons adjacent to a carbonyl group) are often acidic due to resonance stabilization of the resulting enolate ion.
Write the deprotonation reaction. Use MathML to represent the chemical equation, showing the molecule reacting with the strong base to form the conjugate base and water (or the corresponding conjugate acid of the base).
Analyze the stability of the conjugate base formed. If the conjugate base is resonance-stabilized or otherwise stabilized, it confirms that the reaction is likely to proceed as written.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Strong Bases
Strong bases are substances that completely dissociate in solution to produce hydroxide ions (OH-). Common examples include sodium hydroxide (NaOH) and potassium hydroxide (KOH). In organic chemistry, strong bases are often used to deprotonate acidic protons in molecules, leading to the formation of reactive intermediates such as carbanions or enolates.
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Acidity and Basicity
Acidity refers to the tendency of a molecule to donate protons (H+), while basicity refers to the ability to accept protons. The strength of an acid or base can be quantified using the pKa scale, where lower pKa values indicate stronger acids. Understanding the relative acidity of functional groups in organic molecules is crucial for predicting the outcome of reactions with strong bases.
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Reaction Mechanisms
Reaction mechanisms describe the step-by-step process by which reactants are converted into products. In the context of strong base reactions, mechanisms may involve deprotonation, nucleophilic attack, or elimination processes. Familiarity with common mechanisms, such as E2 or SN2, helps in predicting the products formed when a strong base reacts with a given organic molecule.
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Related Practice
Textbook Question
For each of the following molecules, predict the product that would form upon reaction of a single equivalent of a strong base.
(d)
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Textbook Question
For each of the following molecules, predict the product that would form upon reaction of a single equivalent of a strong base.
(c)
Textbook Question
Suggest a scheme by which N-methylmorpholine, salicylic acid, and naphthalene can be separated.
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Textbook Question
A medicinal chemist needed to deprotonate acetylene ( HC≡CH ) for use in a coupling reaction. Among the options given, which base(s) could be used for this process?
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Textbook Question
For each of the following molecules, predict the product that would form upon reaction of a single equivalent of a strong base.
(e)
2
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