Ring expansion rearrangement 4 membered ring to 5 membered ring with Mechanism. #SUBSCRIBE SHARE

The rearrangement step transforms a stable tertiary cation into a less stable sec-

ondary cation, relief of strain in expansion from a four- to a fi ve-membered ring makes the

alkyl migration favourable
Reference - ORGANIC CHEMISTRY BY CLAYDEN

FOR MORE UPDATES SUBSCRIBE LIKE & SHARE

expansionrearrangementmembered