Which of the following will give S_N2 reactio | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The rate of $S_N2$ reaction depends on the steric hindrance around the electrophilic carbon and the stability of the transition state.$1$. $S_N2$

Vedclass · Accepted Answer

Phenacyl bromide $(C_6H_5COCH_2Br)$

Vedclass · Answer

(C) The rate of $S_N2$ reaction depends on the steric hindrance around the electrophilic carbon and the stability of the transition state.$1$. $S_N2$ reactions are fastest for primary alkyl halides with minimal steric hindrance.$2$. Phenacyl bromide $(C_6H_5COCH_2Br)$ is a primary alkyl halide where the transition state is stabilized by the adjacent carbonyl group $(C=O)$ through resonance/conjugation with the developing negative charge on the nucleophile or by lowering the energy of the transition state via the electron-withdrawing effect of the carbonyl group.$3$. Benzyl bromide is also reactive,but phenacyl bromide is significantly more reactive in $S_N2$ reactions due to the strong electron-withdrawing nature of the carbonyl group which stabilizes the transition state.$4$. Comparing the options,phenacyl bromide $(C_6H_5COCH_2Br)$ shows the fastest rate for $S_N2$ reactions.

Which of the following will give $S_N2$ reaction at the fastest rate?

Similar Questions

In the above reaction,the major product '$P$' is:

$A$ solution of $(+)-1$-chloro-$1$-phenylethane in toluene racemizes slowly in the presence of a small amount of $SbCl_5$ due to the formation of which of the following?

Which reagents shown below would accomplish the following transformation?
$Isopropyl \ bromide \xrightarrow{1. A \ 2. B} Isopropyl \ alcohol$

Will $CCl_4$ give a white precipitate of $AgCl$ on heating it with silver nitrate? Give a reason for your answer.

The decreasing order of reactivity towards $S_N 1$ reaction for the following compounds is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module