The major product formed in the following reaction is:

Question

Vimal Swarnkar · Accepted Answer

(c) 1-Chloro-1,2-dimethylcyclopentane. HCl adds Markovnikov: secondary cation next to the strained cyclobutane. Ring expansion (C–C shift) relieves strain and gives a tertiary cyclopentyl cation carrying CH₃; Cl⁻ traps it → 1-chloro-1,2-dimethylcyclopentane → (c).

Answer

(a) 1-(2-Chloroethyl)-1-methylcyclobutane

Answer

(b) 1-(1-Chloroethyl)-1-methylcyclobutane

Answer

(d) 1-Chloro-2,2-dimethylcyclopentane

Geo-Scientist Prelims 2020 Chemistry Q106: The major product formed in the following reaction is:

QuestionOrganic / ring expansion