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Chapter 22: 9P (page 728)

Why do you suppose ketone halogenations in acidic media are referred to as being acid-catalyzed,whereas halogenations in basic media are base-promoted? In other words, why is a full equivalent of base required for halogenation?

Short Answer

Expert verified

You need to explain why a full equivalent of base required for halogenation of ketone.

Step by step solution

01

 Step 1: Solution of the problem

The product of a base promoted halogenation is more reactive than that of acid catalyzed.

02

Explanation of the solution

From the above reaction you can see that the electronegative halogen is on a carbon. This makes the product of a base promoted halogenation more reactive.

The electron withdrawing tendency of halogen makes the carbon more acidic which helps the reaction go further.

03

Conclusion

Hence, for the above reason a full equivalent of base required for halogenation of ketone.

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