In the following reaction sequence, the compound J is an intermediate. Ioverset((CH_(3)CO)_(2)O)underset(CH_(3)COONa)rarroverset((i)H_(2),Pd//C)underset({:((ii)SOCl_(2)),((iii)"anhyd. AlCl"_(3)):})(rarr) 'J' (C_(9)H_(8)O_(2)) gives effervescence on treatment with NaHCO_(3) and a positive Baeyer's test. The compound I is

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

1.	In the following reaction sequence, the compound J is an intermediate. Ioverset((CH_(3)CO)_(2)O)underset(CH_(3)COONa)rarroverset((i)H_(2),Pd//C)underset({:((ii)SOCl_(2)),((iii)"anhyd. AlCl"_(3)):})(rarr) 'J' (C_(9)H_(8)O_(2)) gives effervescence on treatment with NaHCO_(3) and a positive Baeyer's test. The compound I is
Answer» Solution :Since the intermadiate 'J' GIVES brisk effervescence on treatment with `NaHCO_(3)`. It must have a -COOH group. Since it gives a positive Baeyer's reagent (decolourisesdilute alkaline `KMnO_(4)`), it should be unsturated in nature. The correponding compound 'I' is benzaldehyde (a). the intermediate 'J' is formed as a RESULT of Perkin's reaction