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Question

A keto ester (X) with molecular formula C6H10O3 on treatment with NaOH and I2 does not give iodoform but on boiling with dilute KOH gives a compound (Y) with molecular formula C4H5O3K which upon acidification followed by heating undergoes decarboxylation to give acetone. The keto ester (X) is?

A
CH3COCH2CH2COOCH3
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B
CH3COCH2COOC2H5
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C
CH3CH2OCH2COOCH3
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D
CH3COCH(CH3)COOCH3
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Solution

The correct option is B CH3COCH2COOC2H5
An Iodoform test is given by Ketones where a free methyl group is attached to a carbonyl group. In the above given options all the option has a free methyl group attached to carbonyl group except option B.

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