Rate of reaction toward Beckmann rearrangement
when $\gamma=\mathrm{CH}_3 \mathrm{CO}_2^{-}$,$\math

Question

Rate of reaction toward Beckmann rearrangement 
when $\gamma=\mathrm{CH}_3 \mathrm{CO}_2^{-}$,$\mathrm{Cl}-\mathrm{CH}_2-\mathrm{CO}_2^{-}, \quad  \mathrm{Ph}-\mathrm{SO}_3^{-}$ \                         (i)                    (ii)                   (iii)

Professor PC Thomas Classes · Answer

Since RDS involve removal of leaving group, rate of reactions compared by leaving group tendency.