Reactivity of the given compound with the following Grignard reagent in the decreasing order is:
$(i) M e M g B r$ $(i i) E t M g B r$ $(i i i) {M e}_{2} C H - M g B r$ $(i v) {M e}_{3} C - M g B r$

(i) > (i i) > (i i i) > (i v)

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(i v) > (i i i) > (i i) > (i)

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(i) > (i i) > (i v) > (i i i)

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(i v) > (i i) > (i i i) > (i)

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Solution

The correct option is A $(i) > (i i) > (i i i) > (i v)$
Since the Grignard reagent reacts by ${S N}^{2}$ mechanism, the reactivity order of ${S N}^{2}$ reaction is $1^{o} R M g X > 2^{o} R M g X > 3^{o} R M g X$ . Hence, the answer is option A.

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Reactivity of the given compound with the following Grignard reagent in the decreasing order is:(i)MeMgBr (ii)EtMgBr (iii)Me2CH−MgBr (iv)Me3C−MgBr

The correct option is A (i)>(ii)>(iii)>(iv)Since the Grignard reagent reacts by SN2 mechanism, the reactivity order of SN2 reaction is 1oRMgX>2oRMgX>3oRMgX. Hence, the answer is option A.

Reactivity of the given compound with the following Grignard reagent in the decreasing order is:
$(i) M e M g B r$ $(i i) E t M g B r$ $(i i i) {M e}_{2} C H - M g B r$ $(i v) {M e}_{3} C - M g B r$

The correct option is A $(i) > (i i) > (i i i) > (i v)$
Since the Grignard reagent reacts by ${S N}^{2}$ mechanism, the reactivity order of ${S N}^{2}$ reaction is $1^{o} R M g X > 2^{o} R M g X > 3^{o} R M g X$ . Hence, the answer is option A.