NEETChemistryAldehydes Ketones and Carboxylic AcidsMCQ+4 / −1
The order of reactivity of phenyl magnesium bromide (PhMgBr) with the following compounds:
- AIII > II > I
- BII > I > III
- CI > III > II
- DI > II > III
View written solutionFree
Correct answer: D
The reactivity of the carbonyl group
towards the nucleophilic addition reactions
depend upon the magnitude of the positive
charge on the carbonyl carbon atom (electronic
factor) and also on the crowding around the carboxyl carbon atom in the transition state
(steric factor). Both these factors predict the
following order
I > II > III
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