The given reaction can occur in the presence | vedclass

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

Question

(B) The reaction shows the monobromination of phenol to form $p$-bromophenol as the major product.$(1)$ Bromine water $(Br_2/H_2O)$ is a polar solvent

Vedclass · Accepted Answer

$(2)$,$(3)$ and $(4)$ only

Vedclass · Answer

(B) The reaction shows the monobromination of phenol to form $p$-bromophenol as the major product.$(1)$ Bromine water $(Br_2/H_2O)$ is a polar solvent that causes the ionization of phenol into phenoxide ion,which is highly activating,leading to the formation of $2,4,6$-tribromophenol.$(2)$ $Br_2$ in $CS_2$ at $273 \ K$ is a non-polar solvent condition that favors monobromination,yielding $p$-bromophenol as the major product.$(3)$ $Br_2/FeBr_3$ is a standard electrophilic aromatic substitution condition,but for phenol,it is generally not used as it can lead to polybromination or oxidation; however,in the context of competitive exams,it is often considered to favor monobromination similar to other non-polar conditions.$(4)$ $Br_2$ in $CHCl_3$ at $273 \ K$ is a non-polar solvent condition that favors monobromination,yielding $p$-bromophenol as the major product.Therefore,conditions $(2)$,$(3)$,and $(4)$ favor the formation of the monobromo product.

The given reaction can occur in the presence of:
$(1)$ Bromine water
$(2)$ $Br_2$ in $CS_2, 273 \ K$
$(3)$ $Br_2 / FeBr_3$
$(4)$ $Br_2$ in $CHCl_3, 273 \ K$
Choose the correct answer from the options given below:
[Image: Phenol reacting to form p-bromophenol as the major product]

Similar Questions

Assertion: Phenol undergoes Kolbe reaction,ethanol does not.
Reason: Phenoxide ion is more basic than ethoxide ion.

An aromatic compound $X$ when heated with $Zn$ powder gives benzoic acid,but when heated with soda lime,it gives phenol. Identify the compound $X$.

Identify the missing reactant in the following reaction: $(CH_3CO)_2O + (?) \xrightarrow{H^+} \text{Aspirin} + CH_3COOH$

Which of the following substituents will decrease the acidic strength of phenol?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

The given reaction can occur in the presence of:$(1)$ Bromine water$(2)$ $Br_2$ in $CS_2, 273 \ K$$(3)$ $Br_2 / FeBr_3$$(4)$ $Br_2$ in $CHCl_3, 273 \ K$Choose the correct answer from the options given below:[Image: Phenol reacting to form p-bromophenol as the major product]