1.

In which of the following reaction deuterium exchange is not observed ?

Answer»

`CH_(3)-UNDERSET(O)underset(||)(C)-CH_(2)-CH_(3) overset(D_(2)O //overset(Theta)(O)H)underset("excess")toCD_(3)underset(O)underset(||)(C)-CD_(2)-CH_(3)`
`CH_(3)-underset(Ph)underset(|)(C)H-underset(O)underset(||)(C)-H overset(D_(2)O //overset(Theta)(O)H)toCH_(3)-underset(Ph)underset(|)(CD)-underset(O)underset(||)(C)-H`

`H-underset(O)underset(||)(C)-H overset(D_(2)O //overset(Theta)(O)H)toD-underset(O)underset(||)(C)-D`

ANSWER :D


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