Question

In the following reaction sequence, the compound J is an intermediate.

$\mathrm{{\rm I}}\frac{{\left({\mathrm{CH}}_3\mathrm{CO}\right)}_2\mathrm{O}}{{\mathrm{CH}}_3\mathrm{COONa}}\mathrm{J}\frac{\left(\mathrm{i}\right){\text{ H}}_{\text{2}},\mathrm{Pd}/\mathrm{C}}{\begin{array}{l}\left(\mathrm{ii}\right){\text{ SOCl}}_{\text{2}}\\ \left(\mathrm{iii}\right){\text{ anhyd. AlCl}}_{\text{3}}\end{array}}\mathrm{K}$

J (C₉H₆O₂) gives effervescence on treatment with NaHCO₃ and a positive Baeyer's test.