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Aldehydes, Ketones and Carboxylic Acids
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Preparation of aldehydes and ketones
NEET level
Single correct option
Difficulty 1 of 3
co046
Benzoyl chloride is hydrogenated over
Pd
supported on
BaSO
X
4
(partly poisoned). The product is
A
benzyl alcohol
B
benzaldehyde
C
benzoic acid
D
toluene
Answer: B
This is the Rosenmund reduction:
C
X
6
H
X
5
COCl
+
H
X
2
C
X
6
H
X
5
CHO
+
HCl
. The poisoned catalyst prevents further reduction of the aldehyde to the alcohol.
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