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what is more stable benzylic or allyic ?

what is more stable benzylic or allyic ?

Grade:12

2 Answers

Aarti Gupta
askIITians Faculty 300 Points
9 years ago
An allylic cation is a carbocation with the positive charge on an allylic carbon; an allylic carbon is a carbon adjacent to an sp2 carbon of an alkene.
CH2=CHC+HR ALLYLIC CARBON
A benzylic cation is a carbocation with the positive charge on a benzylic carbon; a benzylic carbon is a carbon adjacent to an sp2 carbon of a benzene ring
C6H5C+HR BENZYLIC CARBON
An benzylic cation will have more resonating structures than allylic cation ,more resonating structures contributes more stability to benzylic cation.
Abhishek
24 Points
9 years ago
since benzylic cation can delocaize the electrons more efficiently than alylic

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