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Aldehydes, Ketones and Carboxylic Acids
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Preparation of aldehydes and ketones
JEE Main level
Single correct option
Difficulty 2 of 3
co001
Vapours of butan-2-ol are passed over copper at 573 K. The main organic product is
A
butanoic acid
B
butan-2-one
C
but-2-ene
D
butanal
Answer: B
Copper at 573 K dehydrogenates alcohols. A secondary alcohol gives a ketone, so
CH
X
3
CH
(
OH
)
CH
X
2
CH
X
3
gives
CH
X
3
COCH
X
2
CH
X
3
and
H
X
2
.
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