Ring Expansion via Hydride Shift and Methyl Shift

Ring expansions occur as a carbocation rearrangement when an unstable cycloalkane is near a carbocation. You will come across ring expansion mechanisms during alkene reactions and later in SN1 and E1 reactions. They key is to recognize when a ring is unstable, and the type of rearrangement that will help it become more stable. But don’t […]