JEE Advanced | 2017Atomic StructureHard

Question

For the following compounds, the correct statement(s) with respect to nucleophilic substitution reactions is(are)

Options

A.

I and III follow SN1 mechanism

B.

I and II follow SN2 mechanism

C.

Compound Compound IV undergoes inversion of configuration undergoes inversion of configuration

D.

The order of reactivity for I, III and IV is: IV > I > III

Solution

Benzylic and 3o halides both follow SN1 mechanism. Benzylic and 1o halides both follow SN2 mechanism. Benzylic 2o halides can undergo inversion of configuration. The order of reactivity would be IV > I > III if both SN1 and SN2 are considered suitably for substrates

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