1.

In the following reaction sequence, the compound J is an intermediate. I overset((CH_(3)CO)_(2)O)underset(CH_(3)COONa)rarr J overset((i)H_(2),Pd//C)undersetunderset((iii)"anhyd".AICI_(3))((ii)SOCI_(2))rarrK J(C_(9)H_(8)O_(2)) gives effervescence on treatment with NaHCO_(3) and positive Baeyer's test. The compound K is

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Solution :`UNDERSET(I)(Ph)-CHOoverset((CH_(3)CO)_(2)O)underset(CH_(3)COONa)rarr underset(J)(Ph-CH=CH-COOH)`
`OVERSET(H_(2)-PDLC)rarr Ph-CH_(2)-CH_(2)-COOH`
`overset(SOCI_(2))rarr Ph-CH_(2)-CH_(2)-underset(O)underset(||)(C )-CI`


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