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Use acetylene as the only carbon-containing molecule to synthesize Cis-3-hexene H2. Tir 2. 3. Use acetylene as the only carbon-containing molecule to synthesize propanoic acid.

Use acetylene as the only carbon-containing molecule to synthesize Cis-3-hexene H2. Tir 2. 3. Use acetylene as the only carbon-containing molecule to synthesize propanoic acid.

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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### Organic Chemistry Synthesis Problems ### Problem 2: Use acetylene as the only carbon-containing molecule to synthesize **cis-3-hexene**. - **Illustration:** - The process begins with an acetylene molecule containing two carbons. - The target molecule, **cis-3-hexene**, is shown with a double bond between the second and third carbon (indicating "cis" configuration, where the additional substituents on the double-bonded carbons are on the same side). - **Steps Sketch (abbreviated):** - The initial reaction uses hydrogen and a palladium catalyst poisoned with lead acetate, denoted as Pd/CaCO₃ (Pd/C)₂, to achieve a partial hydrogenation, resulting in the "cis" configuration. ### Problem 3: Use acetylene as the only carbon-containing molecule to synthesize **propanoic acid**. - **Illustration:** - The target molecule, **propanoic acid**, is shown with three carbon atoms. It contains a carboxyl group (COOH) at the end. - **Steps (summarized):** - The synthesis constitutes building a three-carbon chain where acetylene acts as a precursor, followed by functional group transformations to achieve the carboxylic acid. These problems emphasize the strategic use of acetylene in synthetic pathways to construct complex organic molecules by controlling hydrogenation reactions and modifying carbon skeletons.
Transcribed Image Text:### Organic Chemistry Synthesis Problems ### Problem 2: Use acetylene as the only carbon-containing molecule to synthesize **cis-3-hexene**. - **Illustration:** - The process begins with an acetylene molecule containing two carbons. - The target molecule, **cis-3-hexene**, is shown with a double bond between the second and third carbon (indicating "cis" configuration, where the additional substituents on the double-bonded carbons are on the same side). - **Steps Sketch (abbreviated):** - The initial reaction uses hydrogen and a palladium catalyst poisoned with lead acetate, denoted as Pd/CaCO₃ (Pd/C)₂, to achieve a partial hydrogenation, resulting in the "cis" configuration. ### Problem 3: Use acetylene as the only carbon-containing molecule to synthesize **propanoic acid**. - **Illustration:** - The target molecule, **propanoic acid**, is shown with three carbon atoms. It contains a carboxyl group (COOH) at the end. - **Steps (summarized):** - The synthesis constitutes building a three-carbon chain where acetylene acts as a precursor, followed by functional group transformations to achieve the carboxylic acid. These problems emphasize the strategic use of acetylene in synthetic pathways to construct complex organic molecules by controlling hydrogenation reactions and modifying carbon skeletons.
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