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The benzenediazonium salt shown is warmed with / (Sandmeyer reaction). Which structure is the product?

  1. AStructure A
  2. BStructure B
  3. CStructure C
  4. DStructure D

Answer: B

The salt shown is benzenediazonium chloride. In the Sandmeyer reaction the diazonium group is replaced by cyanide with loss of , giving benzonitrile; the nitrile carbon is attached directly to the ring.
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