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JEE Main 202315 AprilMorning Shift
Exam
JEE Main
Year
2023
Date
15 April
Shift
Morning Shift
Subject
Chemistry
Chapter
Alcohols Phenols and Ethers

JEE Main 2023 · 15 April · Morning Shift · Chemistry · Alcohols Phenols and Ethers

‘ A ’ formed in the above reaction is

‘ A ’ formed in the above reaction is

‘AA’ formed in the above reaction is

Options

  1. AWhich reactant will give the following alcohol on reaction with one mole of phenyl magnesium bromide (PhMgBr) followed
  2. BWhich reactant will give the following alcohol on reaction with one mole of phenyl magnesium bromide (PhMgBr) followed
  3. CWhich reactant will give the following alcohol on reaction with one mole of phenyl magnesium bromide (PhMgBr) followed
  4. DWhich reactant will give the following alcohol on reaction with one mole of phenyl magnesium bromide (PhMgBr) followed

Correct answer

A. Which reactant will give the following alcohol on reaction with one mole of phenyl magnesium bromide (PhMgBr) followed

Step-by-step solution

Aldehydes and ketones react with water to give 1,1-geminal diols known as hydrates. In general, hydrates are not stable enough to be isolated as the equilibrium shifts back to starting materials (due to Le Chatelier's principle). But the following ketone forms stable diol due to the formation hydrogen bonding as shown below.

‘ A ’ formed in the above reaction is

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