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 Amines

Organic Chemistry

4. Alkanes and Cycloalkanes

Naming Amines

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6:03 minutes

Problem 29f

Textbook Question

Draw condensed and skeletal structures for each of the following amines:
f. cyclohexylethylmethylamine

Verified step by step guidance

Identify the structure of the amine: The name 'cyclohexylethylmethylamine' indicates that the molecule contains a cyclohexyl group (a six-membered ring of carbons), an ethyl group (-CH2CH3), and a methyl group (-CH3) attached to a nitrogen atom.

Determine the connectivity: The nitrogen atom is the central atom in this amine. The cyclohexyl group is attached to the nitrogen via a single bond, as is the ethyl group and the methyl group.

Draw the condensed structure: Write the condensed formula by grouping atoms connected to the nitrogen. For example, the condensed structure would look like N(CH3)(CH2CH2C6H11), where C6H11 represents the cyclohexyl group.

Draw the skeletal structure: In the skeletal structure, represent the cyclohexyl group as a hexagon (indicating the six-membered ring), and use lines to represent the ethyl and methyl groups attached to the nitrogen. The nitrogen atom is typically shown explicitly, while hydrogens bonded to carbons are implied.

Verify the structure: Ensure that the nitrogen atom has three single bonds (one to each group: cyclohexyl, ethyl, and methyl) and a lone pair of electrons, satisfying the valency of nitrogen.

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Key Concepts

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

Amines

Amines are organic compounds derived from ammonia (NH3) by replacing one or more hydrogen atoms with alkyl or aryl groups. They can be classified as primary, secondary, or tertiary based on the number of carbon-containing groups attached to the nitrogen atom. Understanding the structure and classification of amines is essential for drawing their condensed and skeletal forms.

Condensed Structures

Condensed structures are a way of representing organic molecules that shows the connectivity of atoms without depicting all the bonds explicitly. In condensed formulas, groups of atoms are often grouped together to simplify the representation. For amines, this means indicating the nitrogen atom and its attached groups in a compact format, which is crucial for understanding the molecular structure.

Skeletal Structures

Skeletal structures, or line-angle formulas, are a shorthand way of representing organic molecules where carbon atoms are represented by vertices and hydrogen atoms are usually omitted for clarity. Each vertex represents a carbon atom, and the bonds are drawn as lines. This method is particularly useful for visualizing complex molecules like amines, as it allows for a clear depiction of the molecular framework without clutter.

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