Predict the major, organic product for the following reaction. <img src="https://media.pearsoncmg.com/ph/esm/ecs_mullins_organic1e/msa/content/practice-test/img/Ch23_Q09_QT.jpg" alt="The figure illustrates a reaction in which the product has to be determined. The reaction contains three reactants. The first reactant has the following structure: A benzene ring is in a vertical orientation with C 1 occupying the topmost vertex. The ring contains alternating double bonds between C 1 and C 2, C 3 and C 4, and C 5 and C 6. C 6 is single bonded to C 2 of a 2-carbon alkane chain depicted as a line structure using 1 line. The second reactant written over the reaction arrow has the following structure: A 3-carbon alkane chain is depicted as a line structure using 2 zigzag lines. C 3 is single bonded to I on the upper right. The third reactant is F e B r 3 written under the reaction arrow." />

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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

19. Reactions of Aromatics: EAS and Beyond

EAS:Halogenation Mechanism

Organic Chemistry

19. Reactions of Aromatics: EAS and Beyond

EAS:Halogenation Mechanism

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Multiple Choice

Predict the major, organic product for the following reaction.

The figure illustrates the structure of a molecule. A benzene ring is in a vertical orientation with C 1 occupying the topmost vertex. The ring contains alternating double bonds between C 1 and C 2, C 3 and C 4, and C 5 and C 6. C 2 is single bonded to C 1 of a 3-carbon alkane chain depicted as a line structure using 2 zigzag lines. C 6 is single bonded to C 2 of a 2-carbon alkane chain depicted as a line structure using 1 line.

The figure illustrates the structure of a molecule labeled plus ortho. A benzene ring is in a vertical orientation with C 1 occupying the topmost vertex. The ring contains alternating double bonds between C 1 and C 2, C 3 and C 4, and C 5 and C 6. C 3 is single bonded to C 2 of a 3-carbon alkane chain depicted as a line structure using 2 zigzag lines. C 6 is single bonded to C 2 of a 2-carbon alkane chain depicted as a line structure using 1 line.

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Verified step by step guidance

Identify the type of reaction: The reaction involves an alkyl halide (1-iodopropane) and an aromatic compound (ethylbenzene) in the presence of a Lewis acid catalyst (FeBr3). This suggests a Friedel-Crafts alkylation reaction.

Determine the directing effects: The ethyl group on the benzene ring is an ortho/para-directing group due to its electron-donating nature. This means the incoming alkyl group will preferentially add to the ortho or para positions relative to the ethyl group.

Generate the electrophile: The FeBr3 catalyst will interact with the iodine in 1-iodopropane to form a more reactive electrophile, likely a carbocation or a complex that resembles a carbocation.

Consider the stability of the carbocation: The primary carbocation formed from 1-iodopropane can undergo rearrangement to a more stable secondary carbocation if possible, but in this case, it remains primary.

Predict the major product: The primary carbocation will attack the ortho or para position of the ethylbenzene. Given steric and electronic factors, the para position is often favored, but both ortho and para products can form. The major product is likely the para-substituted ethylbenzene with a propyl group.