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What are the products of the following reactions?
h.
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Ch. 16 - Reactions of Aldehydes and Ketones • More Reactions of Carboxylic Acid Derivatives
Bruice8th EditionOrganic ChemistryISBN: 9780135213711
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TOC.tableOfContents
- Ch. 1 - Remembering General Chemistry: Electronic Structure and Bonding31
- 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. 16 - Reactions of Aldehydes and Ketones • More Reactions of Carboxylic Acid DerivativesProblema 56
Bruice 8th EditionCh. 16 - Reactions of Aldehydes and Ketones • More Reactions of Carboxylic Acid DerivativesProblema 56Capitolo 16, Problema 56
Draw the structure of two esters that will be reduced to propanol and butanol by LiAlH4 (followed by addition of aqueous acid).
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Identify the general reaction mechanism: Lithium aluminum hydride (LiAlH4) is a strong reducing agent that reduces esters to their corresponding primary alcohols. The reaction involves breaking the ester bond and converting the carbonyl group into a hydroxyl group.
Determine the alcohol products: The problem specifies that the reduction yields propanol (C3H8O) and butanol (C4H10O). This means the esters must contain the corresponding alkyl groups that will form these alcohols upon reduction.
Write the general structure of an ester: Esters have the general formula RCOOR', where R is the alkyl group attached to the carbonyl carbon, and R' is the alkyl group attached to the oxygen atom. The reduction will break the bond between the carbonyl carbon and the oxygen atom of the ester group.
Assign the appropriate alkyl groups: To form propanol, one ester should have a propyl group (C3H7) as R'. To form butanol, the other ester should have a butyl group (C4H9) as R'. The R group in each ester can be any alkyl group, as it will not affect the alcohol product.
Draw the structures of the esters: For the ester that reduces to propanol, an example structure is ethyl propanoate (CH3CH2COOCH2CH3). For the ester that reduces to butanol, an example structure is methyl butanoate (CH3CH2CH2COOCH3). These esters will yield the desired alcohols upon reduction with LiAlH4 followed by aqueous acid.
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Esters
Esters are organic compounds formed from the reaction of an alcohol and a carboxylic acid, characterized by the functional group -COO-. They are often used in the production of fragrances and flavorings. Understanding the structure of esters is crucial for predicting their reactivity, particularly in reduction reactions.
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02:39
Ester Nomenclature
Reduction with LiAlH4
Lithium aluminum hydride (LiAlH4) is a strong reducing agent commonly used in organic chemistry to reduce esters to alcohols. The reduction process involves the addition of hydride ions to the carbonyl carbon of the ester, leading to the formation of an intermediate that eventually yields an alcohol upon hydrolysis. This reaction is essential for converting esters into primary alcohols.
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07:12Reductive Amination
Propanol and Butanol
Propanol and butanol are primary alcohols derived from the reduction of specific esters. Propanol (C3H8O) can be obtained from the reduction of propanoate esters, while butanol (C4H10O) comes from butanoate esters. Recognizing the relationship between the structure of the starting ester and the resulting alcohol is key to solving the question.
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01:40Same atoms, same connectivity, 1 chiral center.
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