Identify A in the following reaction $\mathrm{A}+\mathrm{CH}_{3} \mathrm{MgBr} \stackrel{\text { ether…
Identify A in the following reaction $\mathrm{A}+\mathrm{CH}_{3} \mathrm{MgBr} \stackrel{\text { ether }}{\longrightarrow}$ complex $\stackrel{\mathrm{H}_{3} \mathrm{O}^{+}}{\longrightarrow}\left(\mathrm{CH}_{3}\right)_{3} \mathrm{C}-\mathrm{OH}$