Which alkyl halide from the following pair is chiral and undergoes faster SN2 reaction?
Among the given pair of compounds, alkyl halide (b) has a chiral centre.
The alkyl halide (a) does not contain a chiral centre and it also gives faster SN2 reaction as SN2 is more favourable in primary alkyl halides.
Give reasons:
The presence of nitro group (–NO2) at o/p positions increases the reactivity of haloarenes towards nucleophilic substitution reactions.
Out of SN1 and SN2, which reaction occurs with
(a) Inversion of configuration
(b) Racemisation