MHT CET202124 Sep 2021Evening ShiftChemistryAldehydes and KetonesActual

Which of the following aldehydes is less reactive towards nucleophilic addition reaction?

Options

ABenzaldehyde
BFormaldehyde
CAcetaldehyde
DButyraldehyde

Correct answer

A. Benzaldehyde

Step-by-step solution

Reactivity for N.A.R Attack of Nucleophile. +ve charge on sp ^2 -carbon 1 Steric hindrance - M |- H |- I + M |+ H |+ I HCHO > CH ₃- CHO > CH ₃- CH ₂- CH ₂ CHO > C ₆ H ₅- CHO Reactivity in decreasing order

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