The migratory aptitude of the following group | vedclass

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Question

(B) The migratory aptitude of an aryl group is directly proportional to the electron density in the benzene ring. Groups that donate electrons to the

Vedclass · Accepted Answer

$a > d > b > c$

Vedclass · Answer

(B) The migratory aptitude of an aryl group is directly proportional to the electron density in the benzene ring. Groups that donate electrons to the ring increase the migratory aptitude,while groups that withdraw electrons decrease it. The order of electron-donating/withdrawing effects is: $-OCH_3$ (strong $+M$ effect) > $-CH_3$ (hyperconjugation and $+I$ effect) > $-H$ (reference) > $-Cl$ ($-I$ effect dominates over $+M$ effect). Therefore,the decreasing order of migratory aptitude is: $(a) > (d) > (b) > (c)$.

The migratory aptitude of the following groups in decreasing order is:

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