Question

Which of the following compounds is obtained on ozonolysis of \(\text{C=C}\) followed by reduction with Zn dust and water?

• A. Butanal
• B. Propanal
• C. Propanone
• D. Butanone

Hint:

Ozonolysis of alkenes with subsequent reduction produces carbonyl compounds like aldehydes and ketones. The reaction depends on the structure of the alkene.

Answer 1

The Correct Option is C

Step 1: Understanding ozonolysis.
Ozonolysis of an alkene (\(\text{C=C}\)) breaks the double bond to form two carbonyl compounds. Reduction with zinc dust and water leads to the formation of ketones or aldehydes. In this case, the ozonolysis followed by reduction of an alkene results in propanone.
Step 2: Analyzing the options.
(A) Butanal: Incorrect. Butanal is an aldehyde, but not the product of this reaction.
(B) Propanal: Incorrect. Propanal is an aldehyde, but it is not the product of this reaction.
(C) Propanone: Correct — Propanone is the product formed from the ozonolysis and reduction of a specific alkene.
(D) Butanone: Incorrect. Butanone is a ketone, but it is not the product of this reaction.
Step 3: Conclusion.
The correct answer is (C) Propanone, which is the product obtained from ozonolysis followed by reduction.