JEE Main Chemistry question

Chemistry Organic Chemistry - Some Basic Principles and Techniques JEE Main

The number of structural and configurational isomers of a bromo compound, C₅H₉Br, formed by the addition of HBr to 2-pentyne, are respectively

(A)1 and 2
(B)2 and 4Correct
(C)4 and 2
(D)2 and 1

Answer: (B)

Solution

Markovnikov addition of one equivalent of HBr to CH₃–C≡C–CH₂CH₃ can place Br at either alkyne carbon, giving 2 structural

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Question ID VK-139870