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JIPMER 2019
Exam
JIPMER
Year
2019
Subject
Chemistry
Chapter
Alcohols Phenols and Ethers

JIPMER 2019 · Chemistry · Alcohols Phenols and Ethers

The main product obtained from phenol with PCl_5 is

The main product obtained from phenol with PCl5\mathrm{PCl}_5 is

Options

  1. ABHC
  2. Bhexachlorobenzene
  3. Cchlorobenzene
  4. Dtriphenyl phosphate

Correct answer

D. triphenyl phosphate

Step-by-step solution

The reaction of phenol with PCl5\mathrm{PCl}_5 is as follows 3C6H5OH+POCl3⟶(C6H5)3PO4+3HCl Triphenyl phosphate \begin{aligned} & 3 \mathrm{C}_6 \mathrm{H}_5 \mathrm{OH}+\mathrm{POCl}_3 \longrightarrow \underset{\text{ Triphenyl phosphate }}{\left(\mathrm{C}_6 \mathrm{H}_5\right)_3 \mathrm{PO}_4+3 \mathrm{HCl}} \\ & \end{aligned} The yield of chlorobenzene in the above reaction is very poor. Thus, the main product of the reaction is triphenyl phosphate (C6H5)3PO4.\left(\mathrm{C}_6\mathrm{H}_5\right)_3 \mathrm{PO}_4 .
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