The action of bromine water (excess) on salicylic acid results in the formation of:

 $\text{'}\mathrm{S}\text{'}$ is:

The major product $\mathrm{X}$ in the above reaction is

Which are the routes that can prepare quinol?

In the following sequence of reactions,

${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}\stackrel{\mathrm{P}+{\mathrm{I}}_2}{⟶}\mathrm{A}\stackrel{\mathrm{Mg}/\mathrm{dry} \mathrm{ether}}{\to }\mathrm{B}\stackrel{\mathrm{HCHO}}{⟶}\mathrm{C}\stackrel{{\mathrm{H}}_2\mathrm{O}}{⟶}\mathrm{D}$,

the compound 'D' is