1. Tardigrade
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  4. Predict the product 'B' in the sequence of reaction HC=CH xrightarrow[HgSO4]30 %H2SO4 A xrightarrowNaOH B

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Q. Predict the product 'B' in the sequence of reaction
$HC=CH \xrightarrow[{HgSO_4}]{30\%H_2SO_4} A \xrightarrow{NaOH} B$

Aldehydes Ketones and Carboxylic Acids

Solution:

Compound $A$ is acetaldehyde and compound $B$ is $3$-hydroxybutanal. $A$ molecule of water is added to acetylene to form vinylic alcohol which tautomerizes to acetaldehyde.
This is followed by aldol condensation to form $3$-hydroxybutanal
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