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प्रश्न
Acetone, Acetaldehyde, Benzaldehyde, Acetophenone – reactivity towards addition of HCN.
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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
Write the products formed when CH3CHO reacts with the following reagents : HCN
What is meant by the following term? Give an example of the reaction in the following case.
Hemiacetal
Complete the synthesis by giving missing starting material, reagent or product.
What is the action of the following reagents on ethanoic acid?
1) `LiAlH_4"/"H_3O^+`
2) `PCl_3 , "heat"`
3) `P_2O_5, "heat"`
Arrange the following in the increasing order of their property indicated:
Ethanal, Propanone, Propanal, Butanone (reactivity towards nucleophilic addition)
Aldehydes and ketones react with hydroxylamine to form ______.
Write the structure of the product formed when acetone reacts with 2, 4 DNP reagent.
Draw the structure of the following derivative.
The ethylene ketal of hexane-3-one
Why dissociation of HCN is suppressed by the addition of HCL?
Draw structure of the following derivative:
Acetaldehydedimethylacetal
