JEE Mains · Chemistry · STD 12 - 6. Haloalkanes and Haloarenes
Given below are two statements:
Statement I: \(3\)-phenylpropene reacts with HBr and gives secondary alkyl bromide having a chiral carbon atom as the major product.
Statement II: Aryl chlorides and aryl cyanides can be prepared by Sandmeyer reaction as well as Gattermann reaction.
In the light of the above statements, choose the correct answer from the options given below
- A Both Statement I and Statement II are true
- B Both Statement I and Statement II are false
- C Statement I is true but Statement II is false
- D Statement I is false but Statement II is true
Answer & Solution
Correct Answer
(C) Statement I is true but Statement II is false
Step-by-step Solution
Detailed explanation
Statement I: When \(3\)-phenylpropene reacts with \(HBr\), protonation of the alkene occurs to form a secondary carbocation. \(C_6H_5-CH_2-CH=CH_2 + H^+ \rightarrow C_6H_5-CH_2-CH^+-CH_3\) This secondary carbocation undergoes a \(1,2\)-hydride shift to form a more stable,…
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