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

1. A Review of General Chemistry

Condensed Structural Formula

Organic Chemistry

1. A Review of General Chemistry

Condensed Structural Formula

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1:54 minutes

Problem 47e

Textbook Question

Represent each of the following condensed structural formulas using a line-angle drawing.
(e) (CH₃)₂CHCH₂CH₂CH₂CH₂CHO

Verified step by step guidance

Step 1: Identify the main chain in the condensed structural formula. The main chain is the longest continuous chain of carbon atoms. In this case, the main chain consists of 7 carbon atoms, ending with an aldehyde group (-CHO).

Step 2: Recognize the substituents attached to the main chain. Here, there is a (CH3)2CH group (an isopropyl group) attached to the second carbon of the main chain.

Step 3: Begin drawing the line-angle structure. Start with a zigzag line representing the main chain of 7 carbons. Each vertex represents a carbon atom, and the aldehyde group (-CHO) is drawn explicitly at the end of the chain.

Step 4: Add the substituents to the line-angle structure. Attach the isopropyl group ((CH3)2CH) to the second carbon of the main chain. Represent the isopropyl group as a branch with two methyl groups attached to a single carbon.

Step 5: Double-check the structure to ensure all carbons and hydrogens are accounted for, and the aldehyde group is correctly placed at the terminal position. Verify that the structure matches the condensed formula provided.

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Key Concepts

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

Condensed Structural Formulas

Condensed structural formulas provide a simplified representation of a molecule, showing the arrangement of atoms and their connectivity without depicting all the bonds explicitly. In these formulas, groups of atoms are often grouped together, such as (CH3)2, indicating branching or functional groups. Understanding how to interpret these formulas is essential for translating them into line-angle drawings.

Line-Angle Drawings

Line-angle drawings, also known as skeletal structures, are a shorthand way of representing organic molecules. In these drawings, vertices represent carbon atoms, and lines represent bonds between them. Hydrogen atoms attached to carbons are usually omitted for simplicity. Mastery of this drawing technique is crucial for visualizing molecular structures quickly and efficiently.

Functional Groups

Functional groups are specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules. In the given formula, the presence of the aldehyde group (CHO) indicates that the molecule has specific reactivity and properties. Recognizing functional groups is vital for understanding the behavior and classification of organic compounds.