Solveeit Logo
Login

Question

Question: The end product of the reaction is: + NBS $\longrightarrow$ X $\xrightarrow{Mg/ether}$ Y $\xrightar...

The end product of the reaction is:

  • NBS ⟶\longrightarrow X →Mg/ether\xrightarrow{Mg/ether} Y →(ii)H2O(i)CH3CN\xrightarrow[(ii)H_2O]{(i)CH_3CN} Z
Answer

The end product Z is 1-(cyclohex-2-en-1-yl)ethan-1-one.

Explanation

Solution

The reaction proceeds through three main steps:

  1. Allylic bromination of cyclohexene with NBS to form 3-bromocyclohexene (X).
  2. Formation of a Grignard reagent from 3-bromocyclohexene by reaction with Mg in ether, yielding cyclohex-2-en-1-ylmagnesium bromide (Y).
  3. Reaction of the Grignard reagent Y with acetonitrile (CH₃CN) followed by hydrolysis, which is a standard method for synthesizing ketones from nitriles and Grignard reagents. This yields 1-(cyclohex-2-en-1-yl)ethan-1-one (Z).