Question #44312

Consider the following reaction sequence involving 3-methoxyphenol (Compound $\mathbf{X}$): \begin{enumerate} \item $\mathbf{X}$ is treated with $1.0$ equivalent of $\ce{EtMgBr}$ in anhydrous THF to yield a metal-phenoxide intermediate $\mathbf{M_1}$. $\mathbf{M_1}$ is then heated with $\ce{CO_2}$ ($120^\circ\text{C}$, $5\text{ atm}$), followed by acidic workup, to yield major product $\mathbf{P}$. \item Separately, $\mathbf{X}$ is treated with aqueous $\ce{KOH}$ and evaporated to dryness to form salt $\mathbf{M_2}$. $\mathbf{M_2}$ is heated with $\ce{CO_2}$ ($120^\circ\text{C}$, $5\text{ atm}$), followed by acidic workup, to yield major product $\mathbf{Q}$. \end{enumerate} Given the diagonal relationship between Mg and Li, which strongly influences the electrostatic polarization and coordination geometry of the intermediates, identify the IUPAC names of major products $\mathbf{P}$ and $\mathbf{Q}$ respectively.