The major product of the reaction is CH_3-CH= | vedclass

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

Question

(B) The reaction involves the addition of $HBr$ to the alkene group present in the molecule. The phenol group ($-OH$ attached to the benzene ring) doe

Vedclass · Accepted Answer

$CH_3-CH_2-CH(Br)-C_6H_4-OH$

Vedclass · Answer

(B) The reaction involves the addition of $HBr$ to the alkene group present in the molecule. The phenol group ($-OH$ attached to the benzene ring) does not undergo nucleophilic substitution reaction $(N.S.R.)$ with $HBr$ because the $C-OH$ bond has partial double bond character due to resonance. Therefore,the reaction is an electrophilic addition reaction $(E.A.R.)$ across the double bond. According to Markovnikov's rule,the $Br^-$ ion attaches to the more substituted carbon atom of the double bond. The reaction is: $CH_3-CH=CH-C_6H_4-OH + HBr \rightarrow CH_3-CH(Br)-CH_2-C_6H_4-OH$. Comparing this with the given options,the correct structure is represented by option $B$.

List-$I$ (Reactants)	List-$II$ (Products)
$A$. Phenol,$Zn / \Delta$	$I$. Salicylaldehyde
$B$. Phenol,$CHCl_3, NaOH, HCl$	$II$. Salicylic acid
$C$. Phenol,$CO_2, NaOH, HCl$	$III$. Benzene
$D$. Phenol,Conc. $HNO_3$	$IV$. Picric acid

The major product of the reaction is $CH_3-CH=CH-C_6H_4-OH + HBr \rightarrow ?$

Similar Questions

Benzoic acid and salicylic acid can be distinguished by

Identify $C$ in the following reaction sequence:

When phenol is treated with bromine water,a white precipitate is obtained. Give the structure and the name of the compound formed.

Match List-$I$ with List-$II$.

List-$I$ (Reactants) List-$II$ (Products)

$A$. Phenol,$Zn / \Delta$ $I$. Salicylaldehyde

$B$. Phenol,$CHCl_3, NaOH, HCl$ $II$. Salicylic acid

$C$. Phenol,$CO_2, NaOH, HCl$ $III$. Benzene

$D$. Phenol,Conc. $HNO_3$ $IV$. Picric acid

What is the increasing order of boiling points for the following alcohols?
$I.$ $1, 2-$dihydroxybenzene
$II.$ $1, 3-$dihydroxybenzene
$III.$ $1, 4-$dihydroxybenzene
$IV.$ hydroxybenzene

Vedclass Test Series

Exam Paper Generator

Online Exam Module