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Question

In the following sequence of reactions, the alkene affords the compound 'B'
CH3CH=CHCH3O3−→AH2O−−→ZnB The compound B is:

A
CH3COCH3
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B
CH3CH2COCH3
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C
CH3CHO
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D
CH3CH2CHO
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Solution

The correct option is C CH3CHO
The compound A is intermediate ozonide or zwitter ion formation by 1,3 cycloaddition to a symmetrical alkene. It is reduced by reducing agents like Zn dust, thiourea or dimethyl sulphide producing aldehyde like acetaldehyde as compound B.

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