According to fundamental concept of organic chemistry 6 hyperconjugation of a molecule is considered to be as same as a equivallent canonical structure for molecular or in this case carbocation stabilisation. So as in this case tert butyl carbocation has 3 hyperconjugation extra thus tert butyl carbocation should be stable than allylic carbocation.
means allylic me 2 equivalent canonical structure hai jo 6 hyperconjugative structure se same hote hai..now tert butyl carbocations is 3 hyperconjugative structure more stable so more stable
option C
Explanation-
More the resonance more is the stability of carbocation.
I and III are more stable due to +I as well as +H effect of CH3 groups. in I there is +R effect of benzine ring so most stable.
II is least stable due to bridge head carbocation. we know that positive charge is less stable at bridge head position due to non planarity
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Priyanshu kumar![best-answer]()
According to fundamental concept of organic chemistry 6 hyperconjugation of a molecule is considered to be as same as a equivallent canonical structure for molecular or in this case carbocation stabilisation. So as in this case tert butyl carbocation has 3 hyperconjugation extra thus tert butyl carbocation should be stable than allylic carbocation.
i dont get it can u plz explain again
means allylic me 2 equivalent canonical structure hai jo 6 hyperconjugative structure se same hote hai..now tert butyl carbocations is 3 hyperconjugative structure more stable so more stable
and also tert butyl carbocation is more stable as +H effect and +I effect of methyl group is there
okay thank u very much