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/Ch19_Q15_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 6-carbon hexagonal ring is in a vertical orientation with C 1 occupying the topmost vertex. C 2 is single bonded to a C atom in the form of a line. C is triple bonded to N on the upper right. The second reactant is L i A l H 4 written over the reaction arrow. The third reactant is H superscript plus quench 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

21. Aldehydes and Ketones: Nucleophilic Addition

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Organic Chemistry

21. Aldehydes and Ketones: Nucleophilic Addition

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Multiple Choice

Predict the major, organic product for the following reaction.

The figure illustrates the structure of a molecule. A 6-carbon hexagonal ring is in a vertical orientation with C 1 occupying the topmost vertex. C 2 is single bonded to C H 2 in the form of a line. C H 2 is single bonded to N H 2 on the lower right.

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Identify the functional group in the starting material: The starting material is a nitrile, characterized by the carbon-nitrogen triple bond (C≡N).

Recognize the reagent: Lithium aluminum hydride (LiAlH₄) is a strong reducing agent commonly used to reduce nitriles to primary amines.

Understand the reaction mechanism: LiAlH₄ donates hydride ions (H⁻) to the carbon of the nitrile group, breaking the triple bond and forming an imine intermediate.

Protonation step: The imine intermediate is then protonated by the acid (H⁺ quench) to form the primary amine.

Predict the product: The major organic product of this reaction is a primary amine, where the nitrile group (C≡N) is reduced to a CH₂NH₂ group.

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