In the following reactions sequence, the compound J is an intermediate.
$$
\text { I } \xrightarrow{\left(\mathrm{CH}_3 \mathrm{CO}\right)_2 \mathrm{O}} \text { J } \xrightarrow[\substack{\text { (ii) } \mathrm{SOCl}_2 \\ \text { (ii) anhyd. } \mathrm{AlCl}_3}]{\text { (i) } \mathrm{H}_2, \mathrm{Pd} / \mathrm{C}} \mathrm{~K}
$$
$\mathrm{J}\left(\mathrm{C}_9 \mathrm{H}_8 \mathrm{O}_2\right)$ gives effervescence on treatment with $\mathrm{NaHCO}_3$ and positive Baeyer's test
The compound I is
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