Give the major organic product(s) for each step of the following reaction

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Give the major organic product(s) for each step of the following reaction
The image depicts a multistep organic synthesis reaction sequence starting from butanol and ending in a ketone.

1. **Starting Material:**
   - **Butanol:** The structure is CH₃-CH₂-CH₂-CH₂-OH.

2. **First Reaction:**
   - **Reagent:** Hydrobromic acid (HBr).
   - **Reaction:** Butanol reacts with HBr.
   - **Product A:** The product of this reaction is butyl bromide (CH₃-CH₂-CH₂-CH₂-Br).

3. **Second Reaction:**
   - **Reagent:** Magnesium (Mg) in diethyl ether (Et₂O).
   - **Reaction:** Butyl bromide reacts with magnesium in diethyl ether.
   - **Product B:** The product of this reaction is butyl magnesium bromide, a Grignard reagent (CH₃-CH₂-CH₂-CH₂-MgBr).

4. **Third Reaction:**
   - **Reagent:** Formaldehyde (H₂C=O) followed by acid workup with hydronium ion (H₃O⁺).
   - **Reaction:** Butyl magnesium bromide reacts with formaldehyde, followed by an acidic workup.
   - **Product C:** The final product of this sequence is pentanal (CH₃-CH₂-CH₂-CH₂-CHO).

Each step involves a specific reagent and intermediate, leading to a transformed organic molecule. The synthesis demonstrates an example of how butanol can be converted into a ketone through a series of well-defined organic reactions, showcasing the utility of different reagents and the process of intermediate transformation in organic chemistry.
Transcribed Image Text:The image depicts a multistep organic synthesis reaction sequence starting from butanol and ending in a ketone. 1. **Starting Material:** - **Butanol:** The structure is CH₃-CH₂-CH₂-CH₂-OH. 2. **First Reaction:** - **Reagent:** Hydrobromic acid (HBr). - **Reaction:** Butanol reacts with HBr. - **Product A:** The product of this reaction is butyl bromide (CH₃-CH₂-CH₂-CH₂-Br). 3. **Second Reaction:** - **Reagent:** Magnesium (Mg) in diethyl ether (Et₂O). - **Reaction:** Butyl bromide reacts with magnesium in diethyl ether. - **Product B:** The product of this reaction is butyl magnesium bromide, a Grignard reagent (CH₃-CH₂-CH₂-CH₂-MgBr). 4. **Third Reaction:** - **Reagent:** Formaldehyde (H₂C=O) followed by acid workup with hydronium ion (H₃O⁺). - **Reaction:** Butyl magnesium bromide reacts with formaldehyde, followed by an acidic workup. - **Product C:** The final product of this sequence is pentanal (CH₃-CH₂-CH₂-CH₂-CHO). Each step involves a specific reagent and intermediate, leading to a transformed organic molecule. The synthesis demonstrates an example of how butanol can be converted into a ketone through a series of well-defined organic reactions, showcasing the utility of different reagents and the process of intermediate transformation in organic chemistry.
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