4. Provide the reagents (at the reaction arrows, use 1).... 2).... if more than one step is needed) that synthesize the indicated carboxylic acids. + CHCI3 он + он он Br он + NH HO.

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### Problem 4: Synthesis of Indicated Carboxylic Acids

**Objective:**
Provide the reagents (at the reaction arrows, use 1).... 2).... if more than one step is needed) that synthesize the indicated carboxylic acids. 

**Given:**
Four different organic compounds are provided as starting materials, each requiring conversion to a specific carboxylic acid. At each reaction arrow, the correct reagents must be provided.

### Reactions
1. **First Reaction:**
    - **Starting Material:** Pentanal
    - **Target Product:** Pentanoic acid and chloroform (CHCl₃)

2. **Second Reaction:**
    - **Starting Material:** Ethyl acetate
    - **Target Product:** Acetic acid and ethanol

3. **Third Reaction:**
    - **Starting Material:** 1-Bromo-1-phenylethane 
    - **Target Product:** Benzoic acid

4. **Fourth Reaction:**
    - **Starting Material:** 3-Cyanopropene
    - **Target Product:** Butanoic acid and ammonium ion (NH₄⁺)

### Missing Reagents (to be identified):

1. **Reagents for Pentanal to Pentanoic Acid and Chloroform:**
    - Reagent 1: TBD
    - Reagent 2: TBD

2. **Reagents for Ethyl acetate to Acetic Acid and Ethanol:**
    - Reagent 1: TBD
    - Reagent 2: TBD

3. **Reagents for 1-Bromo-1-phenylethane to Benzoic Acid:**
    - Reagent 1: TBD
    - Reagent 2: TBD

4. **Reagents for 3-Cyanopropene to Butanoic Acid and NH₄⁺:**
    - Reagent 1: TBD
    - Reagent 2: TBD

**Explanation of Diagram:**
Each reaction sequence is represented as a set of organic chemical structures. The starting material is on the left side, and the target products are on the right side, connected by an arrow. The arrow includes a rectangular box where the required reagents need to be indicated.

**Note:** Students should carefully identify the reagents required to achieve the target product from the given starting material, keeping in mind standard organic chemistry
Transcribed Image Text:### Problem 4: Synthesis of Indicated Carboxylic Acids **Objective:** Provide the reagents (at the reaction arrows, use 1).... 2).... if more than one step is needed) that synthesize the indicated carboxylic acids. **Given:** Four different organic compounds are provided as starting materials, each requiring conversion to a specific carboxylic acid. At each reaction arrow, the correct reagents must be provided. ### Reactions 1. **First Reaction:** - **Starting Material:** Pentanal - **Target Product:** Pentanoic acid and chloroform (CHCl₃) 2. **Second Reaction:** - **Starting Material:** Ethyl acetate - **Target Product:** Acetic acid and ethanol 3. **Third Reaction:** - **Starting Material:** 1-Bromo-1-phenylethane - **Target Product:** Benzoic acid 4. **Fourth Reaction:** - **Starting Material:** 3-Cyanopropene - **Target Product:** Butanoic acid and ammonium ion (NH₄⁺) ### Missing Reagents (to be identified): 1. **Reagents for Pentanal to Pentanoic Acid and Chloroform:** - Reagent 1: TBD - Reagent 2: TBD 2. **Reagents for Ethyl acetate to Acetic Acid and Ethanol:** - Reagent 1: TBD - Reagent 2: TBD 3. **Reagents for 1-Bromo-1-phenylethane to Benzoic Acid:** - Reagent 1: TBD - Reagent 2: TBD 4. **Reagents for 3-Cyanopropene to Butanoic Acid and NH₄⁺:** - Reagent 1: TBD - Reagent 2: TBD **Explanation of Diagram:** Each reaction sequence is represented as a set of organic chemical structures. The starting material is on the left side, and the target products are on the right side, connected by an arrow. The arrow includes a rectangular box where the required reagents need to be indicated. **Note:** Students should carefully identify the reagents required to achieve the target product from the given starting material, keeping in mind standard organic chemistry
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