Advertisements
Advertisements
प्रश्न
Explain the following reaction:
Wolff-Kishner reduction
Explain Wolf-Kishner reduction reaction.
Explain the following reaction and write the chemical equation involved:
Wolff-Kishner reduction
Advertisements
उत्तर
In this reaction, the reduction of carbonyl compounds to hydrocarbons takes place by heating them with hydrazine and a base to form hydrazine which is further reduced to form a methylene group along with nitrogen gas.
\[\begin{array}{cc}
\phantom{..}\ce{R}\phantom{....................................}\ce{R}\phantom{......................................}\ce{R}\phantom{.......................}\\
\phantom{..}\backslash\phantom{.....................................}\backslash\phantom{......................................}\backslash\phantom{...................}\\
\phantom{....}\ce{C = \underset{Hydrazine}{O + H2N - NH2} -> C = N - NH2 ->[glycol + KOH][180°C] CH2 + N2(g)}\\
\phantom{..}/\phantom{.....................................}/\phantom{......................................}/\phantom{...................}\\
\phantom{............}\ce{\underset{Carbonyl compound}{R'}}\phantom{........................}\ce{R'}\phantom{................................}\ce{\underset{Hydrocarbon}{R'}}\phantom{.................................}
\end{array}\]
APPEARS IN
संबंधित प्रश्न
How will you bring about the following conversions?
Propanone to propane
Write the chemical reaction involved in Wolff-Kishner reduction.
How will you bring about the following conversion in not more than two steps?
Propanone to Propene
Complete the synthesis by giving missing starting material, reagent or product.
\[\ce{CH3COCH2COOC2H5 ->[(i) NaBH4][(ii) H+]}\]
Predict the products of the following reactions :
Predict the main product of the following reaction:\[\begin{array}{c}
\ce{O\phantom{----}O\phantom{-}}\\
\ce{||\phantom{----}||\phantom{-}}\\
\ce{CH3-C-CH2-C-OCH3}
\end{array}\ce{->[(i)NaBH4][(ii)H+]}\]
Explain the following reactions:
Clemmensen reaction
Write the main product in the following reaction:
\[\ce{CH3CH2CHO ->[Zn(Hg)/Conc. HCl]}\]
What is the catalyst used in the hydrogenation of acetyl chloride to produce ethanal?
Identify product (A) in the following reaction:
