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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5:54 minutes

Problem 4a

Textbook Question

Draw the condensed and skeletal structures for each of the following:
a. 1-chloro-3-hexyne

Verified step by step guidance

Step 1: Understand the nomenclature of the compound. The name '1-chloro-3-hexyne' indicates that the molecule is a six-carbon chain (hex-) with a triple bond (-yne) starting at the third carbon and a chlorine atom attached to the first carbon.

Step 2: Begin by drawing the skeletal structure. Represent the six-carbon chain as a zigzag line, with the triple bond between the third and fourth carbons. Use a single line for single bonds and three parallel lines for the triple bond.

Step 3: Add the chlorine atom to the first carbon in the chain. Represent the chlorine atom as 'Cl' attached to the first carbon in the skeletal structure.

Step 4: For the condensed structure, write the molecular formula in a compact form. Start with the chlorine atom attached to the first carbon, followed by the chain of carbons and hydrogens. Indicate the triple bond between the third and fourth carbons explicitly.

Step 5: Double-check the structure to ensure it matches the IUPAC name. Verify that the chlorine is on the first carbon, the triple bond is between the third and fourth carbons, and the chain contains six carbons in total.

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Key Concepts

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

Condensed Structures

Condensed structures are a simplified way of representing organic molecules, where the connectivity of atoms is shown without depicting all the bonds explicitly. In these structures, groups of atoms are often grouped together, and hydrogen atoms attached to carbons are usually omitted for clarity. This format allows for a quick understanding of the molecular formula and the arrangement of functional groups.

Skeletal Structures

Skeletal structures, also known as line-angle structures, are a representation of organic molecules where carbon atoms are represented by vertices and lines represent bonds. Hydrogen atoms are typically not shown, as they are implied based on the tetravalency of carbon. This method is particularly useful for visualizing larger molecules and understanding their geometry and connectivity at a glance.

Alkynes

Alkynes are a class of hydrocarbons characterized by at least one carbon-carbon triple bond. They follow the general formula CnH2n-2, indicating that they are unsaturated compounds. The presence of the triple bond significantly influences the chemical reactivity and physical properties of alkynes, making them important in various organic reactions and synthesis.

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