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The correct order of reactivity for the ...

The correct order of reactivity for the nucleophilic addition reaction of the following carbonyl compounds with ethyl magnesium iodide is :

A

`II gt II gt I gt IV`

B

`IV gt III gt II gt I`

C

`I gt II gt IV gt III`

D

`I gt III gt II gt IV`

Text Solution

Verified by Experts

The correct Answer is:
D
If the carbonyl compound is sterically crowded, then it will be reluctant to undergo addition reaction. Moreover, attachment of bulkier alkyl group with the carbonyl carbon decreases the partial positive charge resulting into the minimization of attack by `R^(-)` from RMgBr. So, the order is
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