What is the major organic product of the following reaction sequence? 4 01 Oll O III ON NH₂ 11 CN Br: 1. NaCN 2. LIAIH 3. H₂O* III NH₂ IV :0: NH₂

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Chapter1: Chemical Foundations
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**Question:**

What is the major organic product of the following reaction sequence?

**Reaction Sequence:**

1. Starting compound: Hexane with a bromine (Br) attached to one carbon.
2. Reagents: 
   - 1. Sodium cyanide (NaCN)
   - 2. Lithium aluminum hydride (LiAlH₄)
   - 3. Aqueous acid (H₃O⁺)

**Product Options:**

- **I**: Cyclohexane with an amine group (NH₂) attached.
- **II**: Hexane with a nitrile group (CN) attached.
- **III**: Hexane with an amine group (NH₂) attached.
- **IV**: Hexane with a carbonyl group (C=O) and a nitrene (N⁺: with two lone pairs).

**Answer Choices:**

- ☐ I
- ☐ II
- ☐ III
- ☐ IV

**Explanation:**

The initial step with NaCN replaces the bromine with a nitrile group. The second step, LiAlH₄, reduces the nitrile to an amine group. Finally, H₃O⁺ might protonate the amine group if necessary. Therefore, the major organic product of the reaction sequence given this series of transformations is option **III**: Hexane with an amine group (NH₂) attached.
Transcribed Image Text:**Question:** What is the major organic product of the following reaction sequence? **Reaction Sequence:** 1. Starting compound: Hexane with a bromine (Br) attached to one carbon. 2. Reagents: - 1. Sodium cyanide (NaCN) - 2. Lithium aluminum hydride (LiAlH₄) - 3. Aqueous acid (H₃O⁺) **Product Options:** - **I**: Cyclohexane with an amine group (NH₂) attached. - **II**: Hexane with a nitrile group (CN) attached. - **III**: Hexane with an amine group (NH₂) attached. - **IV**: Hexane with a carbonyl group (C=O) and a nitrene (N⁺: with two lone pairs). **Answer Choices:** - ☐ I - ☐ II - ☐ III - ☐ IV **Explanation:** The initial step with NaCN replaces the bromine with a nitrile group. The second step, LiAlH₄, reduces the nitrile to an amine group. Finally, H₃O⁺ might protonate the amine group if necessary. Therefore, the major organic product of the reaction sequence given this series of transformations is option **III**: Hexane with an amine group (NH₂) attached.
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