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  4. The correct order of reactivity for the addition reaction of the following carbonyl compounds with ethyl magnesium iodide is <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/c-lvvidk8s2nnd.png />

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

Question

NTA AbhyasNTA Abhyas 2020Aldehydes Ketones and Carboxylic Acids

Solution:

If the carbony carbonyl is stericaly crowded, then it will be reluctant to undergo addition reaction. Moreover, attachment of bulkier alkyl groups with the carbonyl carbon lessens its positive charge resulting into the minimisation of attack by $\overset{\cdot \cdot }{\overset{-}{R}}$ from RMgBr. So, the order is

Solution