Which of the following statements is/are TRUE regarding carbocation rearrangements? — Reaction Mechanism Chemistry Question

💡 Solution & Explanation

Hydride shifts typically have the highest migratory aptitude ($H^- > Ph^- > R^-$). Ring expansions relieve angle strain (e.g., $4 \rightarrow 5$ membered). Ring contractions can occur if the thermodynamic driving force (like forming a highly stable cyclopropylmethyl cation) is very strong.