QuestionOrganic / Hofmann elimination
The major product formed in the following reaction is:


- (a) CH₃CH=CH₂
- (b) CH₃CH=CHCH₃
- (c) CH₃CH₂CH=CH₂
- (d) H₂C=CH₂
Answer: (d)
Quaternary ammonium hydroxide on heating gives the Hofmann product (least substituted alkene) — OH⁻ removes the most accessible, most acidic β-H. Here the ethyl group gives ethene, H₂C=CH₂ → (d).