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The compound (A) is:...


The compound `(A)` is:

A

a.`Aq. KMnO_(4)`

B

b.`NaOI`

C

c.`[Ag(NH_(3))_(2)]^(o+)//H_(3)O^(o+)`

D

d.`MnO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
In `(a)`, aqueous `KMnO_(4) (cold)` will hydroxylate the `(C=C)` bond.
In `(b), NaOI` (iodoform reaction) will not react since there is no `(MeCO-)` or `(MeCHO)` or `(MeCH OH)` group.
In `(c )`, Tollens reagent will convert the `(-CHO)` group to `(COO^(ɵ))` group without affecting `(C=C)` bond.
`Ph-CH=CH-CHO underset((ii) H_(3)O^(o+))overset((i) "Tollens reagent")(rarr) Ph-CH=CH-COH`
In `(d), MnO_(2)` will not react, since it does not contain allylic or benzylic group. So the answer is `(c )`.
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