In the following reaction sequence, the compound $\mathrm{J}$ is an intermediate.
$\mathbf{J}\left(\mathrm{C}_{9} \mathrm{H}_{8} \mathrm{O}_{2}\right)$ gives effervescence on treatment with $\mathrm{NaHCO}_{3}$ and a positive Baeyer's test. Question: The compound $\mathbf{I}$ is

Question

In the following reaction sequence, the compound $\mathrm{J}$ is an intermediate.

$\mathbf{J}\left(\mathrm{C}_{9} \mathrm{H}_{8} \mathrm{O}_{2}\right)$ gives effervescence on treatment with $\mathrm{NaHCO}_{3}$ and a positive Baeyer's test. Question: The compound $\mathbf{I}$ is

In the following reaction sequence, the compound $\mathrm{J}$ is an intermediate.…