Identify $[\mathrm{X}]$ used in the given reaction.

$[\mathrm{X}]+$ Copper $/ 573 \mathrm{~K} \rightarrow[\mathrm{Y}]$

$[\mathrm{Y}] \xrightarrow[\text { (ii) } \mathrm{H}_2 \mathrm{O} / \mathrm{H}^{+}]{\text {(i) } \mathrm{CH}_3 \mathrm{MgBr}}$ Tert.butyl alcohol. (major product)

What are the intermediates formed during the reactions $A$ and $B$ ?

A. Reimer-Tiemann reaction.

B. Dehydration of alcohols in the slow rate determining step.

Complete the following 2 reactions A \& B by choosing appropriate reactants $[\mathrm{X}] \&[\mathrm{Y}]$.