Give common names for the following compounds. (a) CH 3 –C≡C–CH 2 CH 3 (b) Ph–C≡C–H

All right. Hey everyone. So for this question, we have to provide the common names of two distinct structures. Now, what these two structures have in common is that they both contain carbon, carbon, triple bonds or all kinds, right? When it comes to the common names of all kinds, it's important to remember that we consider all all kinds to be derivatives of aceta, right? So therefore, the end of the common name for an alk kind has to be ace. So if we have a situation where we have two groups on either carbon here, then we have to name both aio groups alphabetically and then follow that up with the word ace. And let's illustrate that example with the first compound that were given right here. We have, we have a seven carbon chain actually. No, we have a six carbon chain. Yes, we have a six carbon chain and that double bond is in between carbons, two and three. So now that I've drawn out the structure, we can list the all co groups that are on either side of the triple bond itself. And then like I mentioned before, we can list them in alphabetical order and then follow that up with the term ace. So on the right side, here, we have only one carbon, which indicates that it is a methyl group. And on the left side, we have three carbons excluding the one from the al kind itself. So three carbons indicates that it is propal and alphabetically speaking M comes before P, right. So our common name here is going to be methyl, propal A and there's part A. So now let's proceed to part B now, part B, right. Part B is interesting because we have the same R group on either side of the triple bond itself. Specifically, the abbreviation of it is P H which if you recall equals that it is a fennel group or a benzene ring, right? So we have two pheno groups on either side of our triple bond, which simply means that are all Q groups are going to be named as such or arrow groups in this case. So instead of listing out two different aero groups are two different substituent, we can simply say that this is dial A and so here is your final answer for both. So just to recap, right? When providing the common name of an all kind, if it's substituted, you have to list the names of your substituent in alphabetical order. And then follow that up with the term ace. So with that being said, thank you so much for watching and I hope you found this helpful.

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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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Problem 27a,b

Textbook Question

Give common names for the following compounds.
(a) CH₃–C≡C–CH₂CH₃
(b) Ph–C≡C–H

Verified step by step guidance

Identify the functional groups present in each compound. Common names often depend on the functional groups and the structure of the carbon chain.

For compound (a), determine if it is an alcohol, ketone, aldehyde, carboxylic acid, or another type of compound. Look for characteristic groups like -OH, C=O, -COOH, etc.

For compound (b), similarly, identify the functional group and the structure of the carbon chain. This will help in determining the common name.

Once the functional groups are identified, consider the length of the carbon chain and any branching that may affect the common name. For example, a three-carbon alcohol is commonly known as propanol.

Combine the information about the functional group and the carbon chain to determine the common name. For example, a two-carbon alcohol is commonly known as ethanol.

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Key Concepts

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

IUPAC Nomenclature

IUPAC nomenclature is a systematic method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry. It provides a standardized way to name compounds based on their structure, ensuring clear communication among chemists globally.

Common Names in Organic Chemistry

Common names are traditional names for chemical compounds that are often derived from their source or properties. Unlike IUPAC names, common names do not follow systematic rules and can vary widely, but they are frequently used in industry and everyday language.

Functional Groups

Functional groups are specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules. Identifying functional groups is crucial for naming compounds, as they often influence both the IUPAC and common names of organic compounds.

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