MEDIUMMCQ SINGLEJEE Mains ChemistryOrganic ChemistryAldehydes and ketonesPreparation of Aldehydes & Ketones

When but-2-yne is treated dil.H2SO4/HgSO4 the product formed is :

A.butan-1-ol

B.butan-2-ol

C.acetone

D.2-butanone✓ Correct

Explanation

But-2-yne is the compound in which four carbon atoms are present and the second carbon atom has a triple bond. So when the but-2-yne is treated with 퐻푔푆푂4, the addition of hydroxyl group at the second carbon atom. Now, this secondary alcohol will convert into ketone. So, the product will be Butanone. The reaction is given below:

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