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Grade: 12th pass
        
Out of the following which compound contains an active methylene group? (A)  CH3CH2COOH (B) CH3COCH2COOC2H5 (C) CH3CH2COOC2H5 (D) CH3CH2COCH2CH3
10 months ago

Answers : (1)

Arun
22576 Points
							

Active methylene compounds are those in which a methylene group (-CH2-) is sandwiched between two strong electron-withdrawing groups, usually the carbonyl group.

The hydrogen atoms of such a methylene group are very significantly acidic. This is because the carbanion formed by the removal of a proton from the methylene group is well stabilized by the two adjacent electron-withdrawing carbonyl groups .

 

hence option B i.e. ethyl acetoacetate is cprrect answer

10 months ago
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