In the given transformation, which of the following is the most appropriate reagent? 

 

  1. A

    NH2NH2,OH

  2. B

    ZnHg/HCl

  3. C

    Na, liq. NH3

  4. D

    NaBH4

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    Solution:

    The Wolff-Kishner reduction (which uses hydrazine, NH2NH2 and a strong base OH reduces only  _C=O group without affecting the -C=C group.

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