Question

Why is t-butyl bromide more reactive towards sn1 reaction as compared to n-butyl bromide?

Answer 1

Allyl chloride is more reactive than tert butyl as the carbo cation formed from allyl chloride will show resonance due to double Bond and hence increasing stability whereas in tert butyl the carbo cation is stabilized by inductive effect . As resonance effect is more stronger than inductive effect - the intermediate in allyl chloride will be more stable and hence will be more reactive

Answer 2

Explanation:

tertiary alkyl tends to undergo SN1 mechanism because it can form a tertiary carbocation which is stabilized by the three alkyl group attached to it . As alkyl group are electron donating . They allowed the positve charge in the carbocation to be delocalised by the induction effect.Hence out of given pair would undergo SN1 reaction faster.