Which of the following is most reactive towards Grignard's reagent PhMgBr?
A)I
B)II
C)III
D)IV

Question

Which of the following is most reactive towards Grignard's reagent PhMgBr? 
A)I 
B)II 
C)III 
D)IV

Quizplus · Accepted Answer

I is the most reactive towards Grignard's reagent PhMgBr because it has the highest electron density due to the presence of three electron-withdrawing nitro groups. This makes the carbon atom more electrophilic and therefore more susceptible to attack by the nucleophilic Grignard reagent. The other options have either no or less electron-withdrawing groups, making them less reactive towards the Grignard reagent.

Which of the Following Is Most Reactive Towards Grignard's Reagent