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SN2 Reaction Mechanism

Consider the ...

Question

Consider the reactions:
(i) $(C H_{3})_{2} C H - C H_{2} B r C_{2} H_{5} O H \to (C H_{3})_{2} C H - C H_{2} O C_{2} H_{5} + H B r$
(ii) $(C H_{3})_{2} C H - C H_{2} B r C_{2} H_{5} O^{-} \to (C H_{3})_{2} C H - C H_{2} O C_{2} H_{5} + B r^{-}$
The mechanisms of reactions (i) and (ii) are respectively:

S_{N^{2}}

and

S_{N^{1}}

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S_{N^{1}}

and

S_{N^{2}}

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S_{N^{1}}

and

S_{N^{1}}

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S_{N^{2}}

and

S_{N^{2}}

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Solution

The correct option is C $S_{N^{2}}$ and $S_{N^{2}}$
Positive charge will be on the Carbon with $1^{o}$ in Both Examples

as order of Reaction for $S N_{2}$ is $1^{o} > 2^{o} >> 3^{o}$

So, Answer is $S_{N^{2}}$ and $S_{N^{2}}$

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Similar questions

Consider the reactions

(i) $(C H_{3})_{2} C H - C H_{2} B r C_{2} H_{5} O H - ---- \to (C H_{3})_{2} C H - C H_{2} O C_{2} H_{5} + H B r$

(ii) $(C H_{3})_{2} C H - C H_{2} B r C_{2} H_{S} O^{-} - ---- \to (C H_{3})_{2} C H C H_{2} O C_{2} H_{5} + B r^{-}$

The mechanism of reactions (i) & (ii) are respectively

(C H_{3})_{2} C H - C H_{2} B r C_{2} H_{5} O H \to (C H_{3})_{2} C H - C H_{2} O C_{2} H_{5} + H B r

(C H_{3})_{2} C H - C H_{2} B r C_{2} H_{5} O^{-} \to (C H_{3})_{2} C H - C H_{2} O C_{2} H_{5} + B r^{-}

(i) (C H_{3})_{2} C H - C H_{2} B r C_{2} H_{5} O H ⟶ (C H_{3})_{2} C H - C H_{2} O C_{2} H_{5} + H B r (i i) (C H_{3})_{2} C H - C H_{2} B r C_{2} H_{5} O^{-} ⟶ (C H_{3})_{2} C H - C H_{2} O C_{2} H_{5} + B r^{-}

(C H_{3})_{2} C H - C H_{2} B r C_{2} H_{5} O H - ---- \to (C H_{3})_{2} C H - C H_{2} O C_{2} H_{5} + H B r

(C H_{3})_{2} C H - C H_{2} B r C_{2} H_{5} O^{-} - ---- \to (C H_{3})_{2} C H - C H_{2} O C_{2} H_{5} + B r^{-}

(C H_{3})_{2} C H - C H_{2} B r

C_{2} H_{3} O H - ---- \to (C H_{3})_{2} C H - C H_{2} O C_{2} H_{5} + H B r

(C H_{3})_{2} C H - C H_{2} B r

C_{2} H_{3} O^{-} - ---- \to (C H_{3})_{2} C H - C H_{2} O C_{2} H_{5} + H B r

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