JEE Main · 2016 · 03 Apr 2016 · Offline · Hydrocarbons

The product of the reaction given below is:

(A)(see structure)
✓ Correct
(B)(see structure)
(C)(see structure)
(D)(see structure)

Answer: (A)

Solution

The reagent brominates at the allylic carbon, the position next to the double bond, delivering bromine there in low concentration while leaving the

π

bond intact. Treating that allylic bromide with water then replaces the bromine by a hydroxyl group. The product is the corresponding allylic alcohol, its double bond unchanged and the new

-

OH on the carbon adjacent to it.

JEE Main · 2016 · 03 Apr 2016 · Offline · Single correct option

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