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प्रश्न
Acetone, Acetaldehyde, Benzaldehyde, Acetophenone – reactivity towards addition of HCN.
उत्तर
Acetone, acetaldehyde, benzaldehyde, acetophenone - Reactivity with HCN
\[\begin{array}{c}\ce{CH3-C-CH3}\\\ce{||}\\\ce{O}\end{array}
\begin{array}{c}\ce{CH3-CHO}\\\ce{||}\\\ce{O}\end{array}\ce{C6H5CHO}\begin{array}{c}\ce{CH3-C-C6H5}\\\ce{||}\\\ce{O}\end{array}\]
Nucelophile addition by HCN is strongest for aldehyde than ketones. Also, acetophenone is more sterically hindered than acetone, hence comparatively less nucleophilic similarly C6 H5CHO i -s less reactive towards nucleophilic addition than CH3CHO.
\[\begin{array}{c}\ce{CH3-C-C6H5}\\\ce{||}\\\ce{O}\end{array}
\begin{array}{c}\ce{< CH3-C -CH3}\\\ce{||}\\\ce{O}\end{array}\ce{<C6H5CHO < CH3CHO}\]
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संबंधित प्रश्न
Arrange the following compound in increasing order of its reactivity in nucleophilic addition reactions.
Ethanal, Propanal, Propanone, Butanone.
Hint: Consider steric effect and electronic effect.
What is meant by the following term? Give an example of the reaction in the following case.
2, 4-DNP-derivative
Which of the following compounds is most reactive towards nucleophilic addition reactions?
Carboxylic acids contain carbonyl group but do not show the nucleophilic addition reaction like aldehydes or ketones. Why?
Aldehydes and ketones react with hydroxylamine to form ______.
Draw structures of the given derivatives.
The ethylene ketal of hexan-3-one
The product of the following reaction is
\[\begin{array}{cc}
\ce{O}\phantom{.........}\\
||\phantom{.........}\\
\ce{C2H5 - C - CH3 ->[H2/Ni][\Delta] \phantom{..}?}\end{array}\]
Draw structure of the following derivative:
Acetaldehydedimethylacetal
Draw structure of the following derivative.
The ethylene ketal of hexan-3-one
Draw structure of the following derivative.
The ethylene ketal of hexan-3-one
