The order of reactivity of phenyl magnesium bromide with the following compounds is:

(II) > (III) > (I)

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(I) > (III) > (II)

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(II) > (I) > (III)

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All of the above

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Solution

The correct option is C (II) > (I) > (III)
Aldehyde is more reactive than ketone toward nucleophilic addition. Electrophilicity of carbonyl carbon is influenced by electron donating group attached to it and steric crowding as well. Hence, reactivity order is:
$C H_{3} C H O (I I) > C H_{3} C O C H_{3} (I) > P h - C O - P h (I I I)$

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Similar questions

Q. The order or reactivity of phenyl magnesium bromide with the following compounds is:

(I)

C H_{3} - O | | C - C H_{3}

(II)

H - O | | C - C H_{3}

(III)

P h - O | | C - P h

Q. The order of reactivity of phenyl magnesium bromide

(P h M g B r)

with the following compounds:

Mark the correct increasing order of reactivity of the following compounds with HBr / HCl.

(a) I < II < III
(b) II < I < III
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(d) III < II < I

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The order of reactivity of phenyl magnesium bromide with the following compounds is:

The correct option is C (II) > (I) > (III)Aldehyde is more reactive than ketone toward nucleophilic addition. Electrophilicity of carbonyl carbon is influenced by electron donating group attached to it and steric crowding as well. Hence, reactivity order is: CH3CHO(II)>CH3COCH3(I)>Ph−CO−Ph(III)