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The order of reactivity of phenyl magnesium bromide (PhMgBr) with the following compounds:

1. III > II > I
2. II > I > III
3. I > II > III
4. I > III > II

Correct answer: I > II > III

Solution

Phenyl magnesium bromide (PhMgBr) is a Grignard reagent and reacts with compounds based on their electrophilicity. The order of reactivity depends on the nature of the functional groups present in the compounds.

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