I am comparing the stability of the two following carbocations:
1. PhCH=CHCH2(+)
2. CH3CH=CHCH2(+)
Now instinctively I am thinking 1 is more stable than 2 because of greater mesomeric effect and so the (+) charge can be delocalised around the molecule more so than 2...but how would I draw resonance structures for 2? Can a pair of electrons leave the phenyl group and form a double bond to adjacent C as a resonance form?