5.Supply the missing compounds:

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5.Supply the missing compounds:

### Image Transcription and Explanation for Educational Website

The given image depicts a pair of chemical reaction schemes labeled as (c) and (d).

#### Reaction Scheme (c):

This section illustrates a two-step synthesis reaction involving a methoxy-substituted benzene ring.

1. **Starting Material**: A benzene ring with a methoxy group (OCH₃) attached in the para position.
2. **First Reaction**: 
   - **Reagent**: AlCl₃ (Aluminum Chloride)
   - **Reactant**: A chlorinated ketone with the structure ClC(O)(CH₂)₃CH₃.
   - **Product**: Intermediate product labeled as "A".

   This step likely involves a Friedel-Crafts acylation reaction, where the ketone group is introduced onto the aromatic ring facilitated by the Lewis acid catalyst, AlCl₃.

3. **Second Reaction**:
   - **Reagent**: NaBH₄ (Sodium Borohydride)
   - **Product**: Final product labeled as "B".

   The use of NaBH₄ suggests a reduction reaction, likely reducing the acyl group introduced in the previous step to an alcohol.

#### Reaction Scheme (d):

This section shows an electrophilic aromatic substitution reaction.

1. **Starting Material**: A brominated methoxybenzene, where the bromine (Br) is attached on the benzene ring along with the methoxy group (OCH₃).
2. **Reagents**: 
   - SO₃ (Sulfur Trioxide)
   - H₂SO₄ (Sulfuric Acid)

   These reagents are typically used for sulfonation reactions, indicating that a sulfonate group is likely introduced onto the benzene ring.

In summary, these schemes represent advanced organic chemistry transformations, including Friedel-Crafts acylation and subsequent reduction, as well as sulfonation, providing insight into aromatic compound functionalization.
Transcribed Image Text:### Image Transcription and Explanation for Educational Website The given image depicts a pair of chemical reaction schemes labeled as (c) and (d). #### Reaction Scheme (c): This section illustrates a two-step synthesis reaction involving a methoxy-substituted benzene ring. 1. **Starting Material**: A benzene ring with a methoxy group (OCH₃) attached in the para position. 2. **First Reaction**: - **Reagent**: AlCl₃ (Aluminum Chloride) - **Reactant**: A chlorinated ketone with the structure ClC(O)(CH₂)₃CH₃. - **Product**: Intermediate product labeled as "A". This step likely involves a Friedel-Crafts acylation reaction, where the ketone group is introduced onto the aromatic ring facilitated by the Lewis acid catalyst, AlCl₃. 3. **Second Reaction**: - **Reagent**: NaBH₄ (Sodium Borohydride) - **Product**: Final product labeled as "B". The use of NaBH₄ suggests a reduction reaction, likely reducing the acyl group introduced in the previous step to an alcohol. #### Reaction Scheme (d): This section shows an electrophilic aromatic substitution reaction. 1. **Starting Material**: A brominated methoxybenzene, where the bromine (Br) is attached on the benzene ring along with the methoxy group (OCH₃). 2. **Reagents**: - SO₃ (Sulfur Trioxide) - H₂SO₄ (Sulfuric Acid) These reagents are typically used for sulfonation reactions, indicating that a sulfonate group is likely introduced onto the benzene ring. In summary, these schemes represent advanced organic chemistry transformations, including Friedel-Crafts acylation and subsequent reduction, as well as sulfonation, providing insight into aromatic compound functionalization.
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