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Aldehydes, Ketones and Carboxylic Acids
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Nucleophilic addition and addition-elimination reactions
NEET level
Single correct option
Difficulty 1 of 3
co028
Propanone reacts with the ylide
(
C
X
6
H
X
5
)
X
3
P
=
CH
X
2
(Wittig reaction). The organic product is
A
2-methylpropan-2-ol
B
propene
C
butan-2-ol
D
2-methylprop-1-ene
Answer: D
The ylide carbon replaces the carbonyl oxygen, converting
C
=
O
into
C
=
CH
X
2
. So
(
CH
X
3
)
X
2
C
=
O
gives
(
CH
X
3
)
X
2
C
=
CH
X
2
along with
(
C
X
6
H
X
5
)
X
3
P
=
O
.
Practice Aldehydes, Ketones and Carboxylic Acids
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