In which of the following substrates, rate of Benzoin substrates, rate – InterviewSolution

1.	In which of the following substrates, rate of Benzoin substrates, rate of condensation will be maximum ?
Answer» Solution : BENZOIN condensation is due to STABILITY of intermediate (III) when negative CHARGE on Cextensively delocalised in benzene RING, nitro and `C-=N` group. In all other cases, such dispersal is not extensively possible. On the other hand, `NO_(2)-` is alsocreating a positive charge center on carbonyl CARBON, making it more suceptible to nucleophilic attack of `CN^(-)`

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