The allylic carbocation is stable due to delocalization of electrons on carbon atoms. Similarly, in the case of carbocation of cyclohexene, the formal charge on allylic carbon is +1 and it stabilizes by resonance with pi-bond.
Why are allylic carbocations more stable?
Allylic carbocations are a common conjugated system. The positive charge of a carbocation is contained in a P orbital of a sp2 hybrizied carbon. This allows for overlap with double bonds. ... This delocalization stablizes the allyl carbocation making it more stable than a normal primary carbocation.
Are allylic carbocations more stable than tertiary?
As a result, benzylic and allylic carbocations (where the positively charged carbon is conjugated to one or more non-aromatic double bonds) are significantly more stable than even tertiary alkyl carbocations.
