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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Transcribed Image Text:**Title: Hydrogenation Reaction Utilizing Lindlar's Catalyst**
**Objective:**
To draw the major product of the hydrogenation reaction shown in the image.
**Reaction Scheme:**
- **Reactant:**
- A molecular structure featuring a benzene ring attached to a carbon chain with a carbonyl group (C=O) and a chlorine atom (Cl) attached to the chain. This compound is a α-chloroacetophenone.
- **Reagents:**
- Hydrogen gas (H₂)
- Palladium on carbon (Pd/C)
- Barium sulfate (BaSO₄)
- Quinoline
- Sulfur (S)
**Procedure:**
- The combination of reagents used in this reaction is indicative of Lindlar's Catalyst, which is typically employed to selectively hydrogenate alkynes to cis-alkenes. Here, it selectively reduces the carbonyl group in the presence of other functional groups.
**Expected Product:**
- The reaction aims to reduce the carbonyl group while maintaining the integrity of the benzene ring and other substitutions.
**Diagram Interface:**
- The interface shown includes tools to draw different types of molecular bonds (single, double, triple) and elements (C, H, O, Cl) for constructing the molecular structure of the product.
**Conclusion:**
- Utilizing Lindlar's Catalyst facilitates selective reduction in complex organic molecules, crucial for synthesizing desired compounds with minimal side reactions.
This content is designed to help understand the application of selective catalytic hydrogenation in organic chemistry, emphasizing the role of specific catalysts in directing reaction pathways.
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