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Give the decreasing order of reactivity ...

Give the decreasing order of reactivity of Diels `-` Alder reactions
for the following :

A

`(I)gt(II)gt(III)gt(IV)`

B

`(IV)gt(III)gt(II)gt(I)`

C

`(IV)gt(III)gt(I)gt(II)`

D

`(II)gt(I)gt(III)gt(IV)`

Text Solution

Verified by Experts

The correct Answer is:
B
The Diels`-`Alder reaction proceeds faster when di`-`enophiles have `bar(e)-` withdrawing groups and dienes have `bar(e)-` donating group.
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