Hydrocarbons Question 146
Question: In which of the following, addition of $ HBr $ does not take place against Markownikoff’s rule or Anti-Markownikoff addition of $ HBr $ is not observed for [IIT-JEE 1985; CBSE PMT 1994; MADT Bihar 1995; MP PMT 1999; AMU 2002]
Options:
A) Propene
B) But-1-ene
C) But-2-ene
D) Pent-2-ene
Show Answer
Answer:
Correct Answer: C
Solution:
$ CH_3-CH=CH-CH_3+HBr\xrightarrow{Peroxide} $
$ \underset{2-Bromobutane}{\begin{bmatrix} CH_3-CH_2-\underset{|}{\mathop{C}}H-CH_3 \\ Br \\ \end{bmatrix} } $
Anti-markownikoff’s rule is not applicable to symmetrical alkenes.
BETA
