Hydrocarbons - Result Question 21

####22. The reaction of $C_6 H_5 CH=CHCH_3$ with $HBr$ produces:

[2015]

(a) $C_6 H_5 CH_2 CHCH_3$

(c)CC=Cc1ccc(Br)cc1

(d)CCC(Br)c1ccccc1

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Solution:

(d)CCC(Br)C(Br)C(C(C)CBr)C(c1ccccc1)c1ccccc1

(a)CCCCC(CC(C)(C)C)C(C)(C)C

(A) $3^{\circ}$ cabocation (Major) (more stable)

B

Tertiary carbocation is more stable hence gives major product.



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