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Question

Chemistry Question on Aldehydes, Ketones and Carboxylic Acids

Which of the following has most acidic proton :

A

\ceCH3COCH3\ce{CH_3COCH_3}

B

\ce(CH3)2C=CH2\ce{(CH_3)_2C=CH_2}

C

\ceCH3COCH2COCH3\ce{CH_3COCH_2COCH_3}

D

\ce(CH3CH)3CH\ce{(CH_3CH)_3CH}.

Answer

\ceCH3COCH2COCH3\ce{CH_3COCH_2COCH_3}

Explanation

Solution

(Aceto ester) contains two electron withdrawing groups around CH2CH_2 and this CH2CH_2 group is called active methylene group and its hydrogens are acidic.