Textbook Question
Show the products of the following acetylide alkylation reactions. [Make sure your product has the correct number of carbons.]
(c)
919
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Ch. 10 - Alkynes: Electrophilic Addition and Redox Reactions
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
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Mullins 1st EditionCh. 10 - Alkynes: Electrophilic Addition and Redox ReactionsProblem 46
Mullins 1st EditionCh. 10 - Alkynes: Electrophilic Addition and Redox ReactionsProblem 46Chapter 9, Problem 46
Complete the following synthesis by providing the necessary reagents.
Verified step by step guidance1
Step 1: Analyze the first transformation. The starting material is a benzyl ether with an allyl group. The product introduces a bromine atom at the allylic position. This suggests the use of N-bromosuccinimide (NBS) in the presence of light or a radical initiator to perform allylic bromination.
Step 2: Examine the second transformation. The allylic bromide is converted into a compound with a methoxy group at the same position. This indicates a nucleophilic substitution reaction, likely using sodium methoxide (NaOMe) in methanol as the nucleophile.
Step 3: For the third transformation, the methoxy group is replaced with a carbonyl group. This suggests an oxidation reaction. A possible reagent for this transformation is PCC (pyridinium chlorochromate) or DMP (Dess-Martin periodinane).
Step 4: The fourth transformation involves the addition of a propargyl ester group to the carbonyl compound. This is likely achieved through a nucleophilic addition reaction using a propargyl Grignard reagent (e.g., HC≡CCH2MgBr) followed by esterification with methanol and an acid catalyst.
Step 5: Verify the overall synthesis pathway by ensuring that each step logically connects the starting material to the final product and that the reagents used are appropriate for the transformations described.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Reagents in Organic Synthesis
In organic chemistry, reagents are substances used to cause a chemical reaction. Identifying the correct reagents is crucial for synthesizing desired products. Common reagents include acids, bases, oxidizing agents, and reducing agents, each serving specific roles in facilitating reactions such as substitution, addition, or elimination.
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Synthesis of Amino Acids: Strecker Synthesis Example 1
Electrophilic Aromatic Substitution
Electrophilic aromatic substitution (EAS) is a fundamental reaction in organic chemistry where an electrophile replaces a hydrogen atom on an aromatic ring. This reaction is essential for modifying aromatic compounds, and understanding the conditions and types of electrophiles involved is key to predicting the outcome of the synthesis shown in the question.
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Functional Group Transformations
Functional group transformations involve changing one functional group into another during a chemical reaction. Recognizing the functional groups present in the reactants and products is vital for determining the necessary reagents and reaction conditions. This concept is particularly relevant in the context of the provided synthesis, where various functional groups are being manipulated.
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Related Practice
Textbook Question
Suggest a method for synthesizing the following alkynes using an alkyne and an alkyl halide. [There are two correct answers for each product.]
(c)
867
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Textbook Question
Show the products of the following acetylide alkylation reactions. [Make sure your product has the correct number of carbons.]
(d)
665
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Textbook Question
Show the products of the following acetylide alkylation reactions. [Make sure your product has the correct number of carbons.]
(b)
788
views
Textbook Question
Suggest a method for synthesizing the following alkynes using an alkyne and an alkyl halide. [There are two correct answers for each product.]
(a)
1004
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Textbook Question
Beginning with the molecules on the left, provide a synthesis of the molecule on the right. The ideal number of steps is indicated over the reaction arrow, although there may be alternate routes worth considering.
(a)
721
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