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

4. Alkanes and Cycloalkanes

Naming Alkenes

Organic Chemistry

4. Alkanes and Cycloalkanes

Naming Alkenes

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6:57 minutes

Problem 39d,e,f

Textbook Question

What is each compound's systematic name?
d.
e.
f.

Verified step by step guidance

Step 1: Analyze compound (i). Identify the longest carbon chain containing the double bond. The parent chain has 5 carbons, making it a pentene. Number the chain starting from the end closest to the double bond. The substituents are two methyl groups and one propyl group. Assign their positions based on the numbering.

Step 2: For compound (ii), recognize the cyclic structure with a double bond. The parent chain is a cyclopentene. Number the ring starting from the double bond to give the substituent (methyl group) the lowest possible number. Assign the position of the methyl group.

Step 3: Examine compound (iii). It is a cyclohexene with two substituents: an ethyl group and a methyl group. Number the ring starting from the double bond to give the substituents the lowest possible numbers. Assign the positions of the ethyl and methyl groups.

Step 4: Apply IUPAC naming rules to each compound. Combine the parent chain name, the position of the double bond, and the substituents with their positions to form the systematic name for each compound.

Step 5: Double-check the names to ensure they follow IUPAC conventions, including correct numbering and alphabetical order for substituents.

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Key Concepts

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

Systematic Naming

Systematic naming in organic chemistry, also known as IUPAC nomenclature, provides a standardized method for naming chemical compounds. It involves identifying the longest carbon chain, determining the functional groups, and assigning locants to indicate the position of substituents. This systematic approach ensures that each compound has a unique name that conveys its structure.

Alkenes

Alkenes are hydrocarbons that contain at least one carbon-carbon double bond (C=C). They are unsaturated compounds, meaning they have fewer hydrogen atoms than alkanes with the same number of carbon atoms. The presence of the double bond affects the compound's reactivity and physical properties, making it essential to recognize when naming these compounds.

Substituents and Their Position

Substituents are atoms or groups of atoms that replace hydrogen atoms in a hydrocarbon chain. When naming compounds, it is crucial to identify these substituents and their positions on the main carbon chain. The position is indicated by numbers assigned to the carbon atoms, ensuring clarity in the compound's structure and aiding in the systematic naming process.

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