Table of contents

1. A Review of General Chemistry5h 5m
2. Molecular Representations1h 14m
3. Acids and Bases2h 46m
4. Alkanes and Cycloalkanes4h 17m
5. Chirality3h 39m
6. Thermodynamics and Kinetics1h 22m
7. Substitution Reactions1h 48m
8. Elimination Reactions2h 30m
9. Alkenes and Alkynes2h 9m
10. Addition Reactions3h 19m
11. Radical Reactions1h 58m
12. Alcohols, Ethers, Epoxides and Thiols2h 42m
13. Alcohols and Carbonyl Compounds2h 17m
14. Synthetic Techniques1h 26m
15. Analytical Techniques:IR, NMR, Mass Spect7h 3m
16. Conjugated Systems6h 13m
17. Ultraviolet Spectroscopy51m
18. Aromaticity2h 34m
19. Reactions of Aromatics: EAS and Beyond5h 1m
20. Phenols55m
21. Aldehydes and Ketones: Nucleophilic Addition4h 56m
22. Carboxylic Acid Derivatives: NAS2h 51m
23. The Chemistry of Thioesters, Phophate Ester and Phosphate Anhydrides1h 10m
24. Enolate Chemistry: Reactions at the Alpha-Carbon1h 53m
25. Condensation Chemistry2h 9m
26. Amines1h 43m
27. Heterocycles2h 0m
28. Carbohydrates5h 53m
29. Amino Acids4h 20m
30. Peptides and Proteins2h 42m
31. Catalysis in Organic Reactions1h 30m
32. Lipids 2h 50m
33. The Organic Chemistry of Metabolic Pathways2h 52m
34. Nucleic Acids1h 32m
35. Transition Metals6h 14m
36. Synthetic Polymers1h 49m

5. Chirality

R and S Configuration

Organic Chemistry

5. Chirality

R and S Configuration

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Problem 59e

Textbook Question

Using IUPAC rules, name the following molecules.
(e)

Verified step by step guidance

Step 1: Identify the parent chain. The parent chain is the longest continuous chain of carbon atoms. In this molecule, the parent chain is the two-carbon chain attached to the cyclopropene ring.

Step 2: Determine the substituents. The molecule contains a cyclopropene ring (a three-membered ring with one double bond) and an ethyl group attached to the parent chain.

Step 3: Assign the locants for substituents. Number the parent chain starting from the end closest to the cyclopropene ring to give the substituents the lowest possible numbers.

Step 4: Combine the substituents and parent chain name. Use the IUPAC rules to name the molecule, ensuring the substituents are listed alphabetically and their positions are indicated by numbers.

Step 5: Verify the stereochemistry. The wedge bond indicates that the ethyl group is coming out of the plane of the paper. Include stereochemical descriptors (e.g., R/S or cis/trans) if necessary.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

IUPAC Nomenclature

IUPAC nomenclature is a systematic method for naming organic chemical compounds. It provides a set of rules to ensure that each compound has a unique and descriptive name based on its structure. Key elements include identifying the longest carbon chain, naming substituents, and determining the correct numbering of the carbon atoms to give substituents the lowest possible numbers.

Functional Groups

Functional groups are specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules. Recognizing functional groups is essential for naming compounds, as they often dictate the suffix or prefix used in the IUPAC name. Common functional groups include alcohols, carboxylic acids, and amines, each with distinct naming conventions.

Stereochemistry

Stereochemistry refers to the study of the spatial arrangement of atoms in molecules and how this affects their chemical behavior. In naming compounds, it is important to identify any stereoisomers, such as cis/trans or R/S configurations, as these can significantly influence the properties and reactivity of the compounds. Properly indicating stereochemistry is crucial for accurate IUPAC naming.

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