Some Other Fundamental Concepts in Organic Reaction Mechanism

Cotyledons are also called-

The order of leaving group ability in the following groups is
$\begin{array}{l}-\text{OAc}\hfill \\ \text{I}\hfill \end{array}\begin{array}{l}-\text{OMe}\hfill \\ \text{II}\hfill \end{array}\begin{array}{l}-{\text{OSO}}_2\text{Me}\hfill \\ \text{III}\hfill \end{array}\begin{array}{l}-{\text{OSO}}_2{\text{CF}}_3\hfill \\ \text{IV}\hfill \end{array}$

The correct order of the ability of the leaving group is

Which of the following contains tosyl group?

Arrange the following anions in decreasing leaving ability in ${\mathrm{S}}_{\mathrm{N}}2$ reaction -

$\mathrm{I}.{ \mathrm{CF}}_3{\mathrm{CO}}_2^{\mathrm{ }-}$

$\mathrm{II}.{ \mathrm{CH}}_3{\mathrm{SO}}_3^{-}$

$\mathrm{III}. {\mathrm{CF}}_3{\mathrm{SO}}_3^{-}$

$\mathrm{IV}. \mathrm{p}-\mathrm{nitrobenzenesulphonate}$

In which of the following options chlorine will act as the best leaving group.

Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl is: