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Suggest an oxidising agent to convert (C...

Suggest an oxidising agent to convert `(CH_(3))_(2)C=CHCOCH_(3)" to "(CH_(3))_(2)C=CHCOOH.`

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The normal oxidising agents such as acidified `KMnO_(4)`, acidified `K_(2)Cr_(2)O_(7)` or conc. `HNO_(3)` cannot be used in this case as they will cleave double also giving a mixture of ketone/acid. The most effective reagent is `I_(2)" and "NaOH` mixture which converts methyl ketonic group to COOH group without affecting the double bond.
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CH_(3)CH_(2)CH=CHCOOH

(CH_(3))_(2)C=CHCOCH_(3) can be oxidised to (CH_(3))_(2) C=CHCOOH by

Suggest a suitable oxidising agent for the given conversion. (CH_(3))_(2)C = CH-COCH_(3) to (CH_(3))_(2) C= CHCOOH

Which is a stronger oxidising agent ? (CH_(3))_(2) CHOH or (CF_(3))_(2)CHOH

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