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Assign R, S configurations to each indicated chirality center in the molecules below. OH B. HO COOH H₂N HO HO₂C H HO norepinephrine C. H CO₂H H CH,NH, H₂C. alanine H. CH3 CH3 CH₂ dihydrocarvone tartaric acid The configuration of this carbon atom (A) is__R______. True False H

Assign R, S configurations to each indicated chirality center in the molecules below. OH B. HO COOH H₂N HO HO₂C H HO norepinephrine C. H CO₂H H CH,NH, H₂C. alanine H. CH3 CH3 CH₂ dihydrocarvone tartaric acid The configuration of this carbon atom (A) is__R______. True False 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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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### Assigning R, S Configurations in Chiral Centers This section addresses the assignment of R and S configurations to chiral centers in specific molecules. #### Molecules: **A. Norepinephrine** - Structure: - Contains a benzene ring with two hydroxyl groups (OH) and a side chain that includes an amino group (NH2) and a hydroxyl group (OH). - The chiral center is denoted with a dashed line indicating bonds projecting into the plane and a solid wedge indicating bonds projecting away from the plane. **B. Alanine** - Structure: - This amino acid has a carboxyl group (COOH), an amino group (NH2), a methyl group (CH3), and a hydrogen (H) attached to the central chiral carbon. - The projection indicates the tetrahedral geometry required for chiral centers. **C. Tartaric Acid** - Structure: - Contains two carboxyl groups (COOH), a hydroxyl group (OH), and a hydrogen (H) on the central carbon linked to another similar chiral carbon. - Uses lines and wedges to depict the spatial arrangement of bonds. **D. Dihydrocarvone** - Structure: - Features a cyclohexane ring with a ketone group (O) and additional substituents including hydrogen atoms and a side chain (CH2). - Chiral centers are shown with lines and wedges for spatial interpretation. The configuration of this carbon atom (A) is marked with **R**. #### Question: The configuration of the carbon atom (A) is ___ R ___. **Options:** - True - False ### Explanation of Graphs/Diagrams: Each molecular structure provided employs conventional chemical notation to highlight chiral centers: 1. **Solid Wedges** indicate bonds that extend out of the plane of the paper towards the viewer. 2. **Dashed Wedges** represent bonds that extend into the plane of the paper away from the viewer. 3. **Lines** indicate bonds in the plane of the paper. Proper interpretation of these spatial arrangements helps in assigning the R (rectus) or S (sinister) configuration, following the Cahn-Ingold-Prelog priority rules.
Transcribed Image Text:### Assigning R, S Configurations in Chiral Centers This section addresses the assignment of R and S configurations to chiral centers in specific molecules. #### Molecules: **A. Norepinephrine** - Structure: - Contains a benzene ring with two hydroxyl groups (OH) and a side chain that includes an amino group (NH2) and a hydroxyl group (OH). - The chiral center is denoted with a dashed line indicating bonds projecting into the plane and a solid wedge indicating bonds projecting away from the plane. **B. Alanine** - Structure: - This amino acid has a carboxyl group (COOH), an amino group (NH2), a methyl group (CH3), and a hydrogen (H) attached to the central chiral carbon. - The projection indicates the tetrahedral geometry required for chiral centers. **C. Tartaric Acid** - Structure: - Contains two carboxyl groups (COOH), a hydroxyl group (OH), and a hydrogen (H) on the central carbon linked to another similar chiral carbon. - Uses lines and wedges to depict the spatial arrangement of bonds. **D. Dihydrocarvone** - Structure: - Features a cyclohexane ring with a ketone group (O) and additional substituents including hydrogen atoms and a side chain (CH2). - Chiral centers are shown with lines and wedges for spatial interpretation. The configuration of this carbon atom (A) is marked with **R**. #### Question: The configuration of the carbon atom (A) is ___ R ___. **Options:** - True - False ### Explanation of Graphs/Diagrams: Each molecular structure provided employs conventional chemical notation to highlight chiral centers: 1. **Solid Wedges** indicate bonds that extend out of the plane of the paper towards the viewer. 2. **Dashed Wedges** represent bonds that extend into the plane of the paper away from the viewer. 3. **Lines** indicate bonds in the plane of the paper. Proper interpretation of these spatial arrangements helps in assigning the R (rectus) or S (sinister) configuration, following the Cahn-Ingold-Prelog priority rules.
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