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OLI base base excess 4. At which carbon in the final product is there a methyl? H.

OLI base base excess 4. At which carbon in the final product is there a methyl? H.

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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**Question 14:** At which carbon in the final product is there a methyl? **Reaction Details:** 1. **Reactants:** - An ethyl group attached to a carbonyl (C=O). - A simple aldehyde with two hydrogen atoms (formaldehyde). 2. **Conditions:** - The reaction occurs in the presence of a large excess of the aldehyde. - A base is used throughout the reaction steps. 3. **Intermediates and Steps:** - The first arrow indicates the reaction with excess aldehyde and a base to form an intermediate. - The intermediate contains a lithium enolate (indicated by "OLi"). 4. **Final Product:** - The structure is a cyclohexene carboxylic acid with labeled carbons: a, b, c, d, e. **Diagram Explanation:** - The final product is a five-membered ring with a carboxyl group (C=O). - Carbons are labeled a through e on the ring structure. In this context, the question is asking at which of these labeled carbons the methyl group is located in the final product. Based on typical organic reactions and structures, the methyl group is commonly found on carbon e within the context of this reaction mechanism.
Transcribed Image Text:**Question 14:** At which carbon in the final product is there a methyl? **Reaction Details:** 1. **Reactants:** - An ethyl group attached to a carbonyl (C=O). - A simple aldehyde with two hydrogen atoms (formaldehyde). 2. **Conditions:** - The reaction occurs in the presence of a large excess of the aldehyde. - A base is used throughout the reaction steps. 3. **Intermediates and Steps:** - The first arrow indicates the reaction with excess aldehyde and a base to form an intermediate. - The intermediate contains a lithium enolate (indicated by "OLi"). 4. **Final Product:** - The structure is a cyclohexene carboxylic acid with labeled carbons: a, b, c, d, e. **Diagram Explanation:** - The final product is a five-membered ring with a carboxyl group (C=O). - Carbons are labeled a through e on the ring structure. In this context, the question is asking at which of these labeled carbons the methyl group is located in the final product. Based on typical organic reactions and structures, the methyl group is commonly found on carbon e within the context of this reaction mechanism.
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