In a nucleophilic substitution reaction R - B | vedclass

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

Question

(C) The reaction uses $DMF$ (Dimethylformamide),which is a polar aprotic solvent,favoring the $S_N2$ mechanism.$S_N2$ reactions proceed with complete

Vedclass · Accepted Answer

$C_6H_5CH(CH_3)Br$

Vedclass · Answer

(C) The reaction uses $DMF$ (Dimethylformamide),which is a polar aprotic solvent,favoring the $S_N2$ mechanism.$S_N2$ reactions proceed with complete inversion of configuration (Walden inversion).Among the given options,$C_6H_5CH(CH_3)Br$ is a secondary alkyl bromide that is sterically accessible for $S_N2$ attack.$C_6H_5CH_2Br$ is primary and also undergoes $S_N2$,but $C_6H_5CH(CH_3)Br$ is the classic example of an optically active secondary halide showing inversion.$C_6H_5CH(C_6H_5)Br$ and $C_6H_5C(CH_3)(C_6H_5)Br$ are sterically hindered and likely to proceed via $S_N1$ or show mixed results.

In a nucleophilic substitution reaction $R - Br + Cl^{-} \xrightarrow{DMF} R - Cl + Br^{-}$,which one of the following undergoes complete inversion of configuration?

Similar Questions

Benzene hexachloride is

The order of reactivities of the following alkyl halides for an $S_{N}2$ reaction is:

Explain the factors favouring $S_{N}2$ reaction.

An isomer of $C_3H_6Cl_2$ on boiling with aqueous $KOH$ gives acetone. Hence,the isomer is

Out of $C_{6}H_{5}CH_{2}Cl$ and $C_{6}H_{5}CHClC_{6}H_{5},$ which is more easily hydrolysed by aqueous $KOH$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module