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Question
Select the correct order of decreasing reactivity of the following compounds towards the attack of Grignard reagent.
(I)Methyl benzoate (II) Benzaldehyde (III)Benzoyl chloride (IV)Acetophenone
Select the correct order of decreasing reactivity of the following compounds towards the attack of Grignard reagent.
(I)Methyl benzoate (II) Benzaldehyde (III)Benzoyl chloride (IV)Acetophenone
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Solution
The correct option is C III >II >IV >I
The correct order of decreasing reactivity of the following compounds towards the attack of Grignard reagent is (III)benzoyl chloride > (II) benzaldehyde > (IV)acetophenone > (I)methyl benzoate.
As carbonyl group becomes more electron deficient, its reactivity increases so benzoyl chloride is more reactive than benzaldehyde and acetophenone is less reactive due to steric effect.
The correct order of decreasing reactivity of the following compounds towards the attack of Grignard reagent is (III)benzoyl chloride > (II) benzaldehyde > (IV)acetophenone > (I)methyl benzoate.
As carbonyl group becomes more electron deficient, its reactivity increases so benzoyl chloride is more reactive than benzaldehyde and acetophenone is less reactive due to steric effect.
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