AIPMT MAINS2011Chemistry-Organic Chemistry
AIPMT MAINS 2011 Chemistry Grignard Reagents MCQ Question
Type: MCQ-conceptual-Medium-Class 11
The order of reactivity of phenyl magnesium bromide (PhMgBr) with the following compounds:
CH₃C≡O, CH₃CH₂C≡O, PhC≡O
A
I > III > II
B
I > II > III
C
III > II > I
D
II > I > III
Correct Answer
Option B
Detailed Explanation
Electron density increases from I to III on carbonyl carbon, making I the most reactive.
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