JEE Main · 2024 · 05 Apr 2024 · Shift 1 · Compounds Containing Nitrogen

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The number of halobenzenes from the following that can be prepared by Sandmeyer's reaction is ____

Answer: 2

Solution

Sandmeyer's reaction converts an aryl diazonium salt to aryl halides using

CuCl

CuBr

, giving chlorobenzene and bromobenzene. It does not give fluorobenzene (made by Balz-Schiemann), iodobenzene (direct KI) or astatobenzene. Hence only 2 halobenzenes (Cl and Br) can be prepared.

JEE Main · 2024 · 05 Apr 2024 · Shift 1 · Integer answer

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