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Select the correct product. O. 1. LDA, -78 C 2. EtBr B OH A,

Select the correct product. O. 1. LDA, -78 C 2. EtBr B OH A,

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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**Select the correct product.** **Reaction Conditions:** 1. \( \text{LDA, -78 °C} \) 2. \( \text{EtBr} \) **Options:** - **A:** - Structure: Ketone with three carbon atoms in the main chain and a methyl group on the middle carbon. - **B:** - Structure: Ketone with five carbon atoms in the main chain. - **C:** - Structure: Alkene with four carbon atoms and a double bond between the second and third carbon atoms. - **D:** - Structure: Alcohol with four carbon atoms and a hydroxyl group on the second carbon. **Explanation:** This is a typical example of an alkylation reaction using lithium diisopropylamide (LDA) as a strong, bulky base to deprotonate the position alpha to the carbonyl, followed by alkylation with ethyl bromide (EtBr).
Transcribed Image Text:**Select the correct product.** **Reaction Conditions:** 1. \( \text{LDA, -78 °C} \) 2. \( \text{EtBr} \) **Options:** - **A:** - Structure: Ketone with three carbon atoms in the main chain and a methyl group on the middle carbon. - **B:** - Structure: Ketone with five carbon atoms in the main chain. - **C:** - Structure: Alkene with four carbon atoms and a double bond between the second and third carbon atoms. - **D:** - Structure: Alcohol with four carbon atoms and a hydroxyl group on the second carbon. **Explanation:** This is a typical example of an alkylation reaction using lithium diisopropylamide (LDA) as a strong, bulky base to deprotonate the position alpha to the carbonyl, followed by alkylation with ethyl bromide (EtBr).
**Question 12** Draw a reasonable mechanism for the following transformation. **Chemical Reaction:** - **Reactants:** A diketone compound - **Reagents:** NaOH (sodium hydroxide), heat - **Product:** Cyclopentanone with a methyl group **Explanation:** The reaction involves the transformation of a linear diketone into a cyclic ketone (cyclopentanone) with the assistance of sodium hydroxide and heat, likely proceeding via an intramolecular aldol condensation. **Instructions:** - Upload your mechanism drawing using the "Choose a File" option provided below.
Transcribed Image Text:**Question 12** Draw a reasonable mechanism for the following transformation. **Chemical Reaction:** - **Reactants:** A diketone compound - **Reagents:** NaOH (sodium hydroxide), heat - **Product:** Cyclopentanone with a methyl group **Explanation:** The reaction involves the transformation of a linear diketone into a cyclic ketone (cyclopentanone) with the assistance of sodium hydroxide and heat, likely proceeding via an intramolecular aldol condensation. **Instructions:** - Upload your mechanism drawing using the "Choose a File" option provided below.
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