The correct order of reactivity of PhMgBr with `underset((I))(Ph-overset(O)overset(||)(C)-Ph), underset((II))(CH_(3)-overset(O)overset(||)(C)-H)` and
The correct order of reactivity of PhMgBr with
`underset((I))(Ph-overset(O)overset(||)(C)-Ph), underset((II))(CH_(3)-overset(O)overset(||)(C)-H)` and `underset((III))(CH_(3)-overset(O)overset(||)(C)-CH_(3))`
A. `I gt II gt III`
B. `III gt II gt I`
C. `II gt III gt I`
D. `I gt III gt I`
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Correct Answer - C
This is explained on the basis of electronic and steric factors. As a result the nucleophile attack can take place most readily in (II) while it is most difficult in (I).
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