13
Question
Which one of the following carbonyl compounds cannot be prepared by addition of water on an alkyne in the presence of HgSO4 and H2SO4?
Which one of the following carbonyl compounds cannot be prepared by addition of water on an alkyne in the presence of HgSO4 and H2SO4?
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Solution
The correct option is D
One molecule of water adds to an alkyne when it is warmed with HgSO4 and dil. H2SO4 at 333 K to forms a carbonyl compound.
For the preparation of CH3−CH2−CHO(Propanaldehyde), the respective alkyne is,
CH3−C≡C−H.
The addition of H2O to the alkynes follows Markovnikov's rule.
Hence, the product will be
Hence, compound (d) cannot be prepared by additon of water on alkyne in the presence of HgSO4 and H2SO4
Thus, option (c) is correct.
One molecule of water adds to an alkyne when it is warmed with HgSO4 and dil. H2SO4 at 333 K to forms a carbonyl compound.
For the preparation of CH3−CH2−CHO(Propanaldehyde), the respective alkyne is,
CH3−C≡C−H.
The addition of H2O to the alkynes follows Markovnikov's rule.
Hence, the product will be
Hence, compound (d) cannot be prepared by additon of water on alkyne in the presence of HgSO4 and H2SO4
Thus, option (c) is correct.
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