Which of the following conversions can be carried out by Clemmensen reduction?
A
Benzaldehyde into benzyl alcohol
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B
Cyclohexanone into cyclohexane
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C
Benzoyl chloride into benzaldehyde
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D
Benzophenone into diphenyl methane
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Solution
The correct option is D Benzophenone into diphenyl methane The carbonyl group of aldehydes and ketones is reduced to −CH2 group on treatment with zinc amalgam and concentrated hydrochloric acid
(Clemmensen reduction and the corresponding alkane is formed.)
Only in compounds (ii) and (iv), the carbonyl group is converted into a −CH2 group.