What are A & B in the following reaction?m-Br | vedclass

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

Question

(D) The starting material is $m-bromochlorobenzene$ $(m-Br-C_6H_4-Cl)$.Step $1$: Reaction with $Mg/THF$ forms a Grignard reagent. Since $Mg$ reacts fa

Vedclass · Accepted Answer

None of these

Vedclass · Answer

(D) The starting material is $m-bromochlorobenzene$ $(m-Br-C_6H_4-Cl)$.Step $1$: Reaction with $Mg/THF$ forms a Grignard reagent. Since $Mg$ reacts faster with $Br$ than $Cl$ due to the lower bond dissociation energy of $C-Br$,the product $A$ is $m-chlorophenylmagnesium$ bromide $(m-Cl-C_6H_4-MgBr)$.Step $2$: The Grignard reagent $A$ reacts with acetaldehyde $(CH_3CHO)$ followed by acidic workup $(aq. NH_4Cl)$ to form a secondary alcohol. The nucleophilic $m-chlorophenyl$ group attacks the carbonyl carbon of $CH_3CHO$,resulting in $m-chlorophenyl-1-ethanol$ $(m-Cl-C_6H_4-CH(OH)CH_3)$ as product $B$.Comparing this with the given options,none of the provided structures exactly match the correct chemical products $A$ and $B$.

What are $A$ $\&$ $B$ in the following reaction?
$m-Br-C_6H_4-Cl$ $\xrightarrow{Mg/THF} A$ $\xrightarrow[(ii) \ aq. NH_4Cl]{(i) \ CH_3CHO} B$

Similar Questions

Which of the following groups acts as both $-I$ effect and $o, p$-directing group?

Heating chlorobenzene with $NaOH$ at $300\,^oC$ under pressure yields ...........

The product obtained by the nitration of nitrobenzene is.....

Aryl halides are less reactive than alkyl halides towards nucleophilic substitution reactions due to:

What is the product $Z$ in the following reaction sequence?
$C_6H_5N_2Cl$ $\xrightarrow{Cu_2Cl_2/HCl} X$ $\xrightarrow{CH_3Cl/Na, \text{dry ether}} Y$ $\xrightarrow{Cl_2/Fe, \text{dark}} Z$

Vedclass Test Series

Exam Paper Generator

Online Exam Module

What are $A$ $\&$ $B$ in the following reaction?$m-Br-C_6H_4-Cl$ $\xrightarrow{Mg/THF} A$ $\xrightarrow[(ii) \ aq. NH_4Cl]{(i) \ CH_3CHO} B$