(Solved): What is an appropriate stepwise synthesis for the conversion shown? Mg/ether: \( \mathrm{Mg} / \) e ...

What is an appropriate stepwise synthesis for the conversion shown? Mg/ether: \( \mathrm{Mg} / \) ether; Mg/ether; \( \mathrm{MgBr} ; \mathrm{H}_{3} \mathrm{O}^{+} ; \mathrm{PCC} / \mathrm{CH}_{2} \mathrm{Cl}_{2} \) \[ \mathrm{MgBr} ; \mathrm{H}_{3} \mathrm{O}^{+} ; \mathrm{H}_{2} \mathrm{SO}_{4} \]