The Fastest SN1 Reaction Is of the Following?

By BYJU'S Exam Prep

Updated on: September 13th, 2023

The fastest Sn1 reaction is MeO-CH2-Cl. SN1 reactions are known as nucleophilic substitution reactions, where the rate-determining step is considered unimolecular, a type of organic substitution reaction. The reaction involves separating halogen and attacking the nucleophile on carbonium ion from both sides to form alcohol.

The SN1 reaction includes the formation of a carbocation intermediate. It is usually noticed in the responses of secondary or tertiary alkyl halides with secondary or tertiary alcohols under strongly acidic or basic conditions. Inorganic chemistry, the SN1 reaction is often called the dissociative mechanism.


The Fastest SN1 Reaction Is of the Following? – Important Points

A solvent facilitating the carbocation intermediate’s formation will help speed up the rate-determining step of the SN1 reaction. The preferred solvents for this type of reaction are both protic and polar. The protic nature of the solvent helps solvate the leaving group, whereas the opposite spirit of the solvent works in stabilizing the ionic intermediates. Some solvents in SN1 reactions include alcohol and water, which act as nucleophiles.

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