Is cyclopropyl methyl carbanion also exceptionally stable? I know that cyclopropyl methyl carbocation is exceptionally stable and in fact more stable than benzyl carbocation but I was wondering if it was the same case with cyclopropyl methyl carbanion. Is it also more stable than benzyl carbanion?
Sigma resonance only works on cyclopropyl methyl carbocation (and its cyclopropyl derivatives). So I don't think that cyclopropyl methyl carbanion will be exceptionally stable.