MHT CET · Chemistry · Hydrocarbons
Which of the following is formed when propene is heated with chlorine at high temperature?
- A 1,2-Dichloropropane
- B 1-Chloropropane
- C 2-Chloropropane
- D 3-Chloropropene
Answer & Solution
Correct Answer
(D) 3-Chloropropene
Step-by-step Solution
Detailed explanation
When an alkene is heated with \(\mathrm{Cl}_2\) at high temperature, hydrogen atom of allylic carbon is substituted with halogen atom giving allyl halide.
\(\mathrm{CH}_2=\mathrm{CH}-\mathrm{CH}_3+\mathrm{Cl}_2 \longrightarrow\)
\(\mathrm{CH}_2=\mathrm{CH}-\mathrm{CH}_2 \mathrm{Cl}+\mathrm{HCl}\text { 3 - Chloropropene}\)
\(\mathrm{CH}_2=\mathrm{CH}-\mathrm{CH}_3+\mathrm{Cl}_2 \longrightarrow\)
\(\mathrm{CH}_2=\mathrm{CH}-\mathrm{CH}_2 \mathrm{Cl}+\mathrm{HCl}\text { 3 - Chloropropene}\)
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