Stability of cyclobutyl methyl carbocation?

Question

I know that cyclopropyl methyl carbocation is exceptionally stable compared to say, benzyl carbocation. But I want to know how stable is cyclobutyl methyl carbocation compared to say, tertiary/secondary carbocations? Or, will it go rearrangement breaking the ring?

Answer 1

The positive charge will remain on the tertiary carbon where the CH3 group is attached. So I'm confused where you say "how stable is cyclobutyl methyl carbocation compared to say, tertiary/secondary carbocations", because it is a tertiary carbocation! Overall, it's not very stable because it's very likely to react with an acid or base. However, the positive charge is somewhat stabilized by the electron donating CH3.