Which of the following reactions will form a | vedclass

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(A) When phenol reacts with bromine water $(Br_2 / H_2O)$,the phenol ionizes to form the phenoxide ion. The phenoxide ion is highly activated towards

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Phenol reacting with $Br_2$ in $H_2O$.

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(A) When phenol reacts with bromine water $(Br_2 / H_2O)$,the phenol ionizes to form the phenoxide ion. The phenoxide ion is highly activated towards electrophilic aromatic substitution due to the strong electron-donating effect of the $O^-$ group. This leads to the rapid substitution of bromine atoms at all available ortho and para positions,resulting in the formation of $2,4,6-$tribromophenol as a white precipitate.In contrast,when phenol reacts with bromine in a non-polar solvent like $CS_2$ at low temperatures,the reaction is less vigorous,and mono-brominated products (ortho-bromophenol or para-bromophenol) are formed.

Which of the following reactions will form a tri-bromo derivative of phenol?

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