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

Previous problemNext problem

5:56 minutes

Problem 7b

Textbook Question

Name the following:
b.

Verified step by step guidance

Step 1: Identify the longest continuous carbon chain in the structure. This chain will serve as the parent chain and determine the base name of the compound. Count the number of carbons in the chain.

Step 2: Determine the functional groups present in the structure. In this case, there is a triple bond (alkyne) and a double bond (alkene). Note their positions along the parent chain.

Step 3: Assign numbers to the carbon atoms in the parent chain, starting from the end closest to the first functional group (either the triple bond or double bond) to ensure the lowest possible locants for the functional groups.

Step 4: Combine the names of the functional groups with their locants. Use the suffix '-yne' for the triple bond and '-ene' for the double bond. If both are present, the compound is named as an 'enyne,' with the double bond taking priority in numbering.

Step 5: Check for any substituents attached to the parent chain. Name and number them accordingly, and include them in the final name of the compound in alphabetical order.

Verified video answer for a similar problem:

This video solution was recommended by our tutors as helpful for the problem above

Video duration:

Play a video:

Was this helpful?

Key Concepts

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

Functional Groups

Functional groups are specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules. Understanding functional groups is essential in organic chemistry as they determine the properties and reactivity of organic compounds. Common examples include hydroxyl (-OH), carboxyl (-COOH), and amino (-NH2) groups.

Nomenclature

Nomenclature in organic chemistry refers to the systematic naming of organic compounds based on established rules. The International Union of Pure and Applied Chemistry (IUPAC) provides guidelines for naming compounds, which include identifying the longest carbon chain, naming functional groups, and assigning locants to indicate the position of substituents. Mastery of nomenclature is crucial for clear communication and understanding of organic structures.

Structural Representation

Structural representation involves depicting the arrangement of atoms within a molecule, which can be shown through various formats such as Lewis structures, condensed formulas, or skeletal structures. These representations help chemists visualize molecular geometry, bonding, and functional groups, which are vital for predicting reactivity and understanding the compound's behavior in chemical reactions.

Watch next

Master How to name alkenes and alkynes with a bite sized video explanation from Johnny

Start learning

Related Videos

Related Practice

Textbook Question

Which of the following names are correct? Correct those that are not correct.

c. 4-chloro-2-pentyne

d. 2,3-dimethyl-5-octyne

Textbook Question

Draw a condensed structure for each of the following:

i. diethylacetylene

j. di-tert-butylacetylene

Textbook Question

Draw a condensed structure for each of the following:

k. cyclopentylacetylene

l. 5,6-dimethyl-2-heptyne

Textbook Question

Draw the structure for each of the following:

a. 3,3-dimethylcyclopentene

b. 6-bromo-2,3-dimethyl-2-hexene

Textbook Question

The following names are all incorrect. Draw the structure represented by the incorrect name (or a consistent structure if the name is ambiguous), and give your drawing the correct name.

e. 2,5-dimethylcyclohexene

Textbook Question

Write structural formulas for the following compounds (includes both old- and new-style names).

(d) cyclohexylacetylene

(e) 5-methyl-3-octyne

(f) trans-3,5-dibromocyclodecyne

Textbook Question

Draw the molecular orbital picture of but-2-yne.

Textbook Question

Draw the molecular orbital picture of pent-1-en-3-yne.

Show more practices