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C6H5-overset(OH)overset(|)(CH)-CH3 can ...

`C_6H_5-overset(OH)overset(|)(CH)-CH_3` can be prepared form which of the following combinations

A

`C_6H_5-CHO and CH_3MgCl`

B

`C_6H_5MgBr and CH_3CHO`

C

`{:(" "O),(" "||" "and NaBH_4),(C_6H_5-C-CH_3):}`

D

All of these

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the preparation of the compound \( C_6H_5CHOHCH_3 \) (which is phenyl methyl alcohol), we need to analyze the given combinations step by step. ### Step 1: Identify the Compound The compound \( C_6H_5CHOHCH_3 \) is phenyl methyl alcohol. This indicates that it contains a phenyl group \( (C_6H_5) \) attached to a hydroxyl group \( (OH) \) and a methyl group \( (CH_3) \). ### Step 2: Analyze the First Combination **First Combination: Benzaldehyde with Methyl Magnesium Chloride** 1. **Benzaldehyde** \( (C_6H_5CHO) \) is an aldehyde. 2. When reacted with **Methyl Magnesium Chloride** \( (CH_3MgCl) \), a Grignard reagent, it undergoes a nucleophilic addition. 3. The Grignard reagent adds to the carbonyl carbon of benzaldehyde, forming an intermediate. 4. Upon hydrolysis, this intermediate will yield the desired alcohol \( C_6H_5CHOHCH_3 \). ### Step 3: Analyze the Second Combination **Second Combination: Phenyl Magnesium Bromide with Acetaldehyde** 1. **Phenyl Magnesium Bromide** \( (C_6H_5MgBr) \) is another Grignard reagent. 2. When reacted with **Acetaldehyde** \( (CH_3CHO) \), the phenyl group adds to the carbonyl carbon of acetaldehyde. 3. This also leads to the formation of an intermediate, which upon hydrolysis gives the same alcohol \( C_6H_5CHOHCH_3 \). ### Step 4: Analyze the Third Combination **Third Combination: Methyl Phenyl Ketone with Sodium Borohydride** 1. **Methyl Phenyl Ketone** \( (C_6H_5COCH_3) \) is a ketone. 2. When treated with **Sodium Borohydride** \( (NaBH_4) \), a reducing agent, it reduces the ketone to an alcohol. 3. The reduction will yield \( C_6H_5CHOHCH_3 \) as the final product. ### Conclusion Since all three combinations can lead to the formation of \( C_6H_5CHOHCH_3 \), the correct answer is that this compound can be prepared from **all of these combinations**. ### Final Answer **All of these combinations can prepare \( C_6H_5CHOHCH_3 \)**. ---
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