The order of reactivity of phenyl magnesium bromide (PhMgBr) with the following compounds:
A
III > II > I
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B
II > I > III
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C
I > III > II
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D
I > II > III
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Solution
The correct option is D I > II > III The order of reactivity of phenyl magnesium bromide (PhMgBr) with the following compounds is represented as I>II>III.As the number of alkyl groups increases or the size of the alkyl groups increases, the steric crouding increases and the ease of the nucleophilic attack of the grignard reagent on the carbonyl carbon decreases.