1. Tardigrade
  2. Question
  3. Chemistry
  4. The order of reactivity of phenyl magnesium bromide with the following compounds is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The order of reactivity of phenyl magnesium bromide with the following compounds isChemistry Question Image

IIT JEEIIT JEE 2004Aldehydes Ketones and Carboxylic Acids

Solution:

The reactivity of carbonyl compound towards nucleophilic addition of Grignard- reagent depends on extent of steric hindrance at a-carbon. Greater the steric hindrance smaller the reactivity. Hence, reactivity order is
$\underset{II}{CH_3CHO} > \underset{I}{CH_3-CO-CH_3} > \underset{III}{Ph-CO-Ph}$