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)
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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 66d
For each of the following molecules, predict the product that would form upon reaction of a single equivalent of a strong base.
(d) 
Verified step by step guidance1
Identify the functional groups in the molecule. The given molecule contains an amine group (-NH2), a ketone group (C=O), and another amine group (-NH2) attached to the cyclohexane ring.
Determine the reactivity of each functional group with a strong base. Amines are basic and can act as nucleophiles, while the ketone group can undergo deprotonation at the alpha-carbon (the carbon adjacent to the carbonyl group) due to the acidity of the alpha-hydrogen.
Focus on the alpha-carbon of the ketone group. A strong base will abstract the alpha-hydrogen, forming an enolate ion. This is because the alpha-hydrogen is acidic due to resonance stabilization of the enolate ion.
Write the resonance structures of the enolate ion formed. The negative charge on the alpha-carbon can delocalize onto the oxygen atom of the carbonyl group, stabilizing the enolate ion.
Consider the overall product. The reaction with a single equivalent of a strong base will result in the formation of the enolate ion, which is the deprotonated form of the molecule at the alpha-carbon.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Strong Bases in Organic Chemistry
Strong bases, such as sodium hydroxide (NaOH) or potassium tert-butoxide (KOtBu), are capable of deprotonating weak acids. In organic reactions, they can facilitate nucleophilic attacks or promote elimination reactions. Understanding the strength and reactivity of the base is crucial for predicting the outcome of reactions involving functional groups like amines and carbonyls.
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What is an organic molecule?
Amine Reactivity
Amines are basic due to the presence of a lone pair of electrons on the nitrogen atom, which can accept protons. When reacting with strong bases, amines can undergo deprotonation, leading to the formation of an anionic species. This property is essential for predicting how amines will behave in the presence of strong bases, especially in the context of forming new bonds or rearranging structures.
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Carbonyl Compounds and Nucleophilicity
Carbonyl compounds, such as ketones and aldehydes, are electrophilic due to the partial positive charge on the carbon atom. They can react with nucleophiles, including deprotonated amines, to form new products. Understanding the reactivity of carbonyls is vital for predicting the products of reactions involving strong bases and amines, as they can lead to the formation of imines or other derivatives.
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