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X, R' NANH, or NaH or NaOH, A R-C=C-R' Internal alkyne (12) C=C R' H. Vinylic halide X, 1. NaNH, or NaH 2. H20 R-C CH Terminal alkyne (13) C=C R' H. Vinylic halide

X, R' NANH, or NaH or NaOH, A R-C=C-R' Internal alkyne (12) C=C R' H. Vinylic halide X, 1. NaNH, or NaH 2. H20 R-C CH Terminal alkyne (13) C=C R' H. Vinylic halide

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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What is the mechanisms to get from the reactant to the products
# Functional Group Transformations ## Starting Compound Class ### Typical Reagents and Reaction Conditions ### Compound Class Formed ### (12) Transformation - **Starting Compound:** - **Vinylic Halide:** General structure with halide (X) attached to a carbon-carbon double bond (C=C). - **Reagents and Conditions:** - NaNH₂ or NaH or NaOH, applied with heat (∆). - **Transformation Result:** - **Internal Alkyne:** The formation of a compound with a carbon-carbon triple bond (R-C≡C-R'). ### (13) Transformation - **Starting Compound:** - **Vinylic Halide:** General structure with halide (X) attached to a carbon-carbon double bond (C=C). - **Reagents and Conditions:** 1. NaNH₂ or NaH. 2. Followed by addition of H₂O. - **Transformation Result:** - **Terminal Alkyne:** The formation of a compound with a carbon-carbon triple bond where one carbon is bonded to hydrogen (R-C≡C-H).
Transcribed Image Text:# Functional Group Transformations ## Starting Compound Class ### Typical Reagents and Reaction Conditions ### Compound Class Formed ### (12) Transformation - **Starting Compound:** - **Vinylic Halide:** General structure with halide (X) attached to a carbon-carbon double bond (C=C). - **Reagents and Conditions:** - NaNH₂ or NaH or NaOH, applied with heat (∆). - **Transformation Result:** - **Internal Alkyne:** The formation of a compound with a carbon-carbon triple bond (R-C≡C-R'). ### (13) Transformation - **Starting Compound:** - **Vinylic Halide:** General structure with halide (X) attached to a carbon-carbon double bond (C=C). - **Reagents and Conditions:** 1. NaNH₂ or NaH. 2. Followed by addition of H₂O. - **Transformation Result:** - **Terminal Alkyne:** The formation of a compound with a carbon-carbon triple bond where one carbon is bonded to hydrogen (R-C≡C-H).
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Base abstracts proton and the leaving group leaves.

 

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