MCQ
Which of the following is a Wolf - Kishner reduction?
  • $\begin{array}{cc}
    \backslash\phantom{................}\backslash\phantom{............................}\backslash\phantom{..........}\\
    \ce{C = O ->[H2N-NH2][-H2O] C = N-NH2 ->[KOH/ethylene glycol][\Delta] CH2 + N2}\\
    /\phantom{................}/\phantom{............................}/\phantom{..........}\end{array}$
  • B
    $\ce{- C ≡ N + 2[H] ->[SnCl2][dil HCl] - CH = NH*HCl ->[H3O+] - CHO + NH4Cl}$
  • C
    $\ce{- COCl ->[H2][Pd-BaSO4] - CHO + HCl}$
  • D
    $\ce{- Co - + 4[H] ->[Zn-Hg/conc. HCl][\Delta] - CH2 - + H2O}$

Answer

Correct option: A.
$\begin{array}{cc}
\backslash\phantom{................}\backslash\phantom{............................}\backslash\phantom{..........}\\
\ce{C = O ->[H2N-NH2][-H2O] C = N-NH2 ->[KOH/ethylene glycol][\Delta] CH2 + N2}\\
/\phantom{................}/\phantom{............................}/\phantom{..........}\end{array}$
A

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