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Which one of the following reactions will not yield propionic acid?
- a)CH3CH2CH2Br + Mg, CO2 dry ether/H3O+
- b)CH3CH2CCl3 + OH-/H3O+
- c)CH3CH2COCH3 + Ol-/H3O+
- d)CH3CH2CH3 + KMnO4 (Heat), OH-/H3O+
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Which one of the following reactions will not yield propionic acid?a)C...
All except option 1 give propionic acid as the product, but option 1 yields butanoic as the product.
Most Upvoted Answer
Which one of the following reactions will not yield propionic acid?a)C...
Explanation:
In order to obtain propionic acid, we need to start with a compound that contains a propyl group (CH3CH2CH2-) and convert it into a carboxylic acid group (-COOH). Let's analyze each reaction option to determine which one will not yield propionic acid.
a) CH3CH2CH2Br Mg, CO2dry ether/H3O:
This reaction involves the Grignard reagent, which is formed by the reaction of an alkyl halide (in this case, CH3CH2CH2Br) with magnesium (Mg). The Grignard reagent can react with carbon dioxide to produce a carboxylic acid. Therefore, this reaction will yield propionic acid.
b) CH3CH2CCl3 OH-/H3O:
In this reaction, the compound CH3CH2CCl3 is treated with a base (OH-) and then acidified (H3O). This is a substitution reaction where the chlorine atoms are replaced by hydroxyl groups. The resulting compound will not have a carboxylic acid group, so it will not yield propionic acid.
c) CH3CH2COCH3 OH-/H3O:
In this reaction, the compound CH3CH2COCH3 (acetone) is treated with a base (OH-) and then acidified (H3O). This is a nucleophilic addition reaction where the base adds to the carbonyl carbon and forms an alcohol. The resulting compound will not have a carboxylic acid group, so it will not yield propionic acid.
d) CH3CH2CH3 KMnO4(Heat), OH-/H3O:
In this reaction, the compound CH3CH2CH3 (propane) is treated with potassium permanganate (KMnO4) under heat, followed by treatment with a base (OH-) and acidification (H3O). This is an oxidation reaction where the alkane is converted into a carboxylic acid. Therefore, this reaction will yield propionic acid.
Conclusion:
The reaction that will not yield propionic acid is option 'a' (CH3CH2CH2Br Mg, CO2 dry ether/H3O).
In order to obtain propionic acid, we need to start with a compound that contains a propyl group (CH3CH2CH2-) and convert it into a carboxylic acid group (-COOH). Let's analyze each reaction option to determine which one will not yield propionic acid.
a) CH3CH2CH2Br Mg, CO2dry ether/H3O:
This reaction involves the Grignard reagent, which is formed by the reaction of an alkyl halide (in this case, CH3CH2CH2Br) with magnesium (Mg). The Grignard reagent can react with carbon dioxide to produce a carboxylic acid. Therefore, this reaction will yield propionic acid.
b) CH3CH2CCl3 OH-/H3O:
In this reaction, the compound CH3CH2CCl3 is treated with a base (OH-) and then acidified (H3O). This is a substitution reaction where the chlorine atoms are replaced by hydroxyl groups. The resulting compound will not have a carboxylic acid group, so it will not yield propionic acid.
c) CH3CH2COCH3 OH-/H3O:
In this reaction, the compound CH3CH2COCH3 (acetone) is treated with a base (OH-) and then acidified (H3O). This is a nucleophilic addition reaction where the base adds to the carbonyl carbon and forms an alcohol. The resulting compound will not have a carboxylic acid group, so it will not yield propionic acid.
d) CH3CH2CH3 KMnO4(Heat), OH-/H3O:
In this reaction, the compound CH3CH2CH3 (propane) is treated with potassium permanganate (KMnO4) under heat, followed by treatment with a base (OH-) and acidification (H3O). This is an oxidation reaction where the alkane is converted into a carboxylic acid. Therefore, this reaction will yield propionic acid.
Conclusion:
The reaction that will not yield propionic acid is option 'a' (CH3CH2CH2Br Mg, CO2 dry ether/H3O).
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Which one of the following reactions will not yield propionic acid?a)CH3CH2CH2Br + Mg, CO2dry ether/H3O+b)CH3CH2CCl3+ OH-/H3O+c)CH3CH2COCH3+ Ol-/H3O+d)CH3CH2CH3+ KMnO4(Heat), OH-/H3O+Correct answer is option 'A'. Can you explain this answer?
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