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Answer :
When performing a Grignard reaction, it is important that the reaction be free from acetone because: Acetone is an electrophile that will react with the Grignard reagent.
Grignard reagents are highly reactive and can react with any electrophile, including acetone. If acetone is present in the reaction, it will react with the Grignard reagent and prevent the desired reaction from occurring.
This is why it is important to make sure that the glassware is free from acetone before performing a Grignard reaction.
Options B, C, and D are incorrect because acetone does not react with bromobenzene, it is not a nucleophile, and it does not react with diethyl ether.
Therefore, the correct answer is Option A: Acetone is an electrophile that will react with the Grignard reagent.
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Final answer:
Acetone must be avoided in Grignard reactions because it is an electrophile that will react unproductively with the Grignard reagent, thus reducing the yield of the intended product.
Explanation:
When performing a Grignard reaction, the presence of acetone must be avoided because acetone is an electrophile that will react with the Grignard reagent. Acetone contains a carbonyl group, which has a partial positive charge on the carbon atom.
- The Grignard reagent has a carbon with a negative charge that makes it highly nucleophilic. When acetone is present, it can react with the Grignard reagent to form a tertiary alcohol as a side product, thus reducing the yield of the desired reaction.
Therefore, glassware must be thoroughly cleaned to prevent any reaction between acetone and the Grignard reagent.
