Domanda del libro di testo
Predict the products formed when cyclohexanecarbaldehyde reacts with the following reagents.
b. Tollens reagent
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Ch. 18 - Ketones and Aldehydes
Wade9th EditionOrganic ChemistryISBN: 9780135213728
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TOC.tableOfContents
- Ch.1 - Structure and Bonding107
- Ch. 2 - Acids and Bases; Functional Groups115
- Ch.3 - Structure and Stereochemistry of Alkanes100
- Ch.4 - The Study of Chemical Reactions99
- Ch.5 - Stereochemistry93
- Ch.6 - Alkyl Halides; Nucleophilic Substitution118
- Ch. 7 - Structure and Synthesis of Alkenes; Elimination158
- Ch.8 - Reactions of Alkenes171
- Ch.9 - Alkynes91
- Ch.10 - Structure and Synthesis of Alcohols143
- Ch.11 - Reactions of Alcohols104
- Ch. 12 - Infrared Spectroscopy and Mass Spectrometry22
- Ch. 13 - Nuclear Magnetic Resonance Spectroscopy45
- Ch. 14 - Ethers, Epoxides, and Thioethers72
- Ch. 15 - Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy89
- Ch. 16 - Aromatic Compounds74
- Ch. 17 - Reactions of Aromatic Compounds126
- Ch. 18 - Ketones and Aldehydes193
- Ch. 19 - Amines129
- Ch. 20 - Carboxylic Acids77
- Ch. 21 - Carboxylic Acid Derivatives141
- Ch. 22 - Condensations and Alpha Substitutions of Carbonyl Compounds175
- Ch. 23 - Carbohydrates and Nucleic Acids93
- Ch. 24 - Amino Acids, Peptides, and Proteins54
Capitolo 18, Problema 54e
Predict the products formed when cyclohexanecarbaldehyde reacts with the following reagents.
(e) propane-1,3-diol, H+
Guida verificata passo dopo passo1
Identify the functional group in cyclohexanecarbaldehyde. The molecule contains an aldehyde group (-CHO) attached to a cyclohexane ring.
Understand the reaction type. When an aldehyde reacts with a diol (such as propane-1,3-diol) in the presence of an acid catalyst (H⁺), it undergoes acetal formation. This reaction protects the aldehyde group by converting it into a cyclic acetal.
Write the mechanism of the reaction. The aldehyde group reacts with one hydroxyl group of propane-1,3-diol to form a hemiacetal intermediate. This step involves nucleophilic attack by the hydroxyl group on the carbonyl carbon of the aldehyde, followed by proton transfer.
In the next step, the hemiacetal intermediate reacts with the second hydroxyl group of propane-1,3-diol. This step involves the elimination of water and the formation of a cyclic acetal, which is a stable, protected form of the aldehyde.
Draw the final product. The product will be a six-membered cyclic acetal formed by the reaction of the aldehyde group of cyclohexanecarbaldehyde with propane-1,3-diol. Ensure the stereochemistry and connectivity are correct in the structure.
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Aldol Reaction
The aldol reaction is a fundamental organic reaction where an enolate ion reacts with a carbonyl compound to form a β-hydroxy aldehyde or ketone. In this case, cyclohexanecarbaldehyde can undergo an aldol condensation with propane-1,3-diol, leading to the formation of a new carbon-carbon bond and a more complex product.
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09:51
Crossed Aldol
Acid-Catalyzed Reactions
Acid-catalyzed reactions involve the use of an acid to increase the rate of a chemical reaction. In the presence of H+, the carbonyl group of cyclohexanecarbaldehyde becomes more electrophilic, facilitating the nucleophilic attack by the hydroxyl group of propane-1,3-diol, which is essential for forming the desired product.
Video consigliato:
03:09Acid Catalyzed
Stereochemistry
Stereochemistry is the study of the spatial arrangement of atoms in molecules and how this affects their chemical behavior. When cyclohexanecarbaldehyde reacts with propane-1,3-diol, the stereochemical outcomes of the reaction can lead to different isomers, which are important to consider when predicting the final products.
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Percorso guidato
1:38Polymer Stereochemistry Concept 1
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