EXERCISE-2

Select the incorrect statement amount the following:

Identify the correct order of reactivity in electrophilic substitution reactions of the following compounds:

The structure of Wheland intermediate obtained after the attack of ${\mathrm{Br}}^{+}$ on anilinium ion is:

Which of the following statements is/are true

 major product is :

Consider the following sequence of reactions.

${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{C}\equiv \mathrm{CH}\stackrel{{\mathrm{CH}}_3\mathrm{MgBr}}{⟶}\mathrm{A}\underset{2.{\mathrm{H}}_3{\mathrm{O}}^{+}}{\overset{1.\mathrm{HCHO}}{\to }}\mathrm{B}$

The product $\left(\mathrm{B}\right)$ is

In the transformations

$\mathrm{PhCH}={\mathrm{CH}}_2\underset{{\mathrm{CH}}_2{\mathrm{Cl}}_2}{\overset{{\mathrm{ArCO}}_3\mathrm{H}}{\to }}\mathrm{A}\underset{2·{\mathrm{H}}_2\mathrm{O}}{\overset{1.{\mathrm{LiAH}}_4{\mathrm{Et}}_2\mathrm{O}}{\to }}\mathrm{B}$

the end product $\left(\mathrm{B}\right)$ is

Conjugation of electron withdrawing groups, e.g., $-\mathrm{CHO},-\stackrel{\underset{\parallel }{\mathrm{O}}}{\mathrm{C}}-\mathrm{R},-\stackrel{\underset{\parallel }{\mathrm{O}}}{\mathrm{C}}-\mathrm{OR},-\equiv \mathrm{N},-{\mathrm{NO}}_2$ activates