Domanda del libro di testo
Show how you would accomplish the following syntheses. You may use whatever additional reagents you need.
(d)
547
views
Ch. 18 - Ketones and Aldehydes
Wade9th EditionOrganic ChemistryISBN: 9780135213728
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
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 29a
Show how you would accomplish the following syntheses. You may use whatever additional reagents you need.
(a) 
Guida verificata passo dopo passo1
Step 1: Analyze the transformation. The reaction involves converting an aldehyde group (-CHO) into a primary alcohol (-CH2OH) while retaining the ketone group in the cyclic structure.
Step 2: Identify the type of reaction. This is a reduction reaction, where the aldehyde is reduced to an alcohol. A common reagent for this transformation is sodium borohydride (NaBH4), which selectively reduces aldehydes and ketones.
Step 3: Select appropriate conditions. Sodium borohydride (NaBH4) is typically used in a protic solvent like ethanol or methanol to facilitate the reduction reaction.
Step 4: Write the reaction mechanism. The hydride ion (H-) from NaBH4 attacks the carbonyl carbon of the aldehyde, breaking the π bond and forming a tetrahedral intermediate. Protonation of the intermediate by the solvent leads to the formation of the primary alcohol.
Step 5: Verify the product. The ketone group remains intact, and the aldehyde is successfully converted into a primary alcohol, yielding the desired product.
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
2mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Oxidation and Reduction Reactions
In organic chemistry, oxidation refers to the loss of electrons or an increase in oxidation state, often involving the addition of oxygen or the removal of hydrogen. Conversely, reduction is the gain of electrons or a decrease in oxidation state, typically involving the addition of hydrogen or the removal of oxygen. Understanding these concepts is crucial for predicting the products of reactions, such as the conversion of an aldehyde to an alcohol.
Video consigliato:
00:54
Distinguishing between Oxidation and Reduction
Aldehyde to Alcohol Conversion
The transformation of an aldehyde to an alcohol is a common reaction in organic synthesis, typically achieved through reduction. This can be accomplished using reducing agents like lithium aluminum hydride (LiAlH4) or sodium borohydride (NaBH4). Recognizing the functional groups involved and the appropriate reagents is essential for successfully carrying out this synthesis.
Video consigliato:
04:30Comparing and contrasting the Alcohol Conversions.
Stereochemistry and Isomerism
Stereochemistry involves the study of the spatial arrangement of atoms in molecules and how this affects their chemical behavior. In the context of the synthesis shown, understanding stereochemistry is important, especially if the product can exist as different isomers. This knowledge helps predict the properties and reactivity of the synthesized compound, which is vital for further applications in organic chemistry.
Video consigliato:
Percorso guidato
1:38Polymer Stereochemistry Concept 1
Pratica correlata
Domanda del libro di testo
Propose a mechanism for the acid-catalyzed reaction of cyclohexanone with ethylene glycol to give cyclohexanone ethylene acetal.
1732
views
Domanda del libro di testo
Show how you would accomplish the following syntheses. You may use whatever additional reagents you need.
(c)
1238
views
Domanda del libro di testo
Show how you would accomplish the following syntheses. You may use whatever additional reagents you need.
(b)
609
views
Domanda del libro di testo
Propose a mechanism for the acid-catalyzed hydrolysis of cyclohexanone ethylene acetal.
1067
views
Domanda del libro di testo
Propose a mechanism for the acid-catalyzed hydrolysis of the acetal given in Problem 18-26(f).
1534
views