Textbook Question
Describe a synthesis for each of the following compounds, using the given starting material and any necessary reagents:
b.
2
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Ch. 10 - Reactions of Alcohols, Ethers, Epoxides, Amines, and Sulfur-Containing Compounds
Bruice8th EditionOrganic ChemistryISBN: 9780135213711
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Table of contents
- Ch. 1 - Remembering General Chemistry: Electronic Structure and Bonding (Part 1)31
- Ch. 1 - Remembering General Chemistry: Electronic Structure and Bonding (Part 2)65
- 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. 10 - Reactions of Alcohols, Ethers, Epoxides, Amines, and Sulfur-Containing CompoundsProblem 50a
Bruice 8th EditionCh. 10 - Reactions of Alcohols, Ethers, Epoxides, Amines, and Sulfur-Containing CompoundsProblem 50aChapter 11, Problem 50a
Using an alkyl halide and a thiol as starting materials, how would you prepare the following thioethers?
a. 
Verified step by step guidance1
Step 1: Recognize the target molecule as a thioether (sulfide), which has the general structure R-S-R'. In this case, both R and R' are ethyl groups (C2H5).
Step 2: Identify the starting materials. You need an alkyl halide and a thiol. For this synthesis, use ethyl bromide (C2H5Br) as the alkyl halide and ethanethiol (C2H5SH) as the thiol.
Step 3: Understand the reaction mechanism. This is a nucleophilic substitution reaction (SN2 mechanism). The thiol (C2H5SH) acts as a nucleophile, attacking the electrophilic carbon in the ethyl bromide (C2H5Br), displacing the bromide ion (Br⁻).
Step 4: Write the reaction equation: \( \text{C}_2\text{H}_5\text{SH} + \text{C}_2\text{H}_5\text{Br} \rightarrow \text{C}_2\text{H}_5\text{S}\text{C}_2\text{H}_5 + \text{HBr} \). This shows the formation of the thioether and hydrobromic acid as a byproduct.
Step 5: Ensure proper reaction conditions. Perform the reaction in a polar aprotic solvent (e.g., acetone or DMSO) to favor the SN2 mechanism. Use a mild base (e.g., NaOH or KOH) to deprotonate the thiol, increasing its nucleophilicity and facilitating the reaction.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Alkyl Halides
Alkyl halides are organic compounds containing a carbon atom bonded to a halogen atom (such as chlorine, bromine, or iodine). They are key intermediates in organic synthesis and can undergo nucleophilic substitution reactions, where the halogen is replaced by a nucleophile, such as a thiol, to form new compounds like thioethers.
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Thiol Chemistry
Thiols are organic compounds that contain a sulfhydryl group (-SH). They are nucleophilic in nature, meaning they can donate a pair of electrons to form a bond with electrophiles, such as alkyl halides. In the synthesis of thioethers, thiols react with alkyl halides through nucleophilic substitution, resulting in the formation of thioether linkages.
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03:21The mechanism of Sulfide Synthesis.
Nucleophilic Substitution Mechanisms
Nucleophilic substitution is a fundamental reaction mechanism in organic chemistry where a nucleophile attacks an electrophile, leading to the replacement of a leaving group. There are two main types: SN1, which involves a two-step mechanism with carbocation formation, and SN2, which is a one-step process where the nucleophile attacks the electrophile simultaneously as the leaving group departs. Understanding these mechanisms is crucial for predicting the outcomes of reactions involving alkyl halides and thiols.
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Related Practice
Textbook Question
Using an alkyl halide and a thiol as starting materials, how would you prepare the following thioethers?
c.
d.
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Textbook Question
Using an alkyl halide and a thiol as starting materials, how would you prepare the following thioethers?
b.
Textbook Question
The following three nitrogen mustards were studied for possible clinical use. One is now used clinically, one was found to be too unreactive, and one was found to be too insoluble in water to be injected intravenously. Which is which? (Hint: Draw resonance contributors.)
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Textbook Question
What are the minor products of the preceding Hofmann elimination reaction?
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Textbook Question
What is the major product of each of the following reactions?
b .
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