Q. Which of the following compounds shall not produce propene by reaction with HBr followed by elimination or direct only elimination reaction?
A) Cyclopropane ($C_3H_6$ ring)
B) $CH_3CH_2CH_2OH$
C) $H_2C=C=O$
D) $CH_3CH_2CH_2Br$
Explanation
[Solution] Ketene ($H_2C=C=O$) has only two carbons and cannot give propene. Cyclopropane + HBr gives 1-bromopropane, which eliminates to propene. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.