What is the major product obtained from the following reaction (assume enantiomer is also formed)?

Question

Quizplus · Accepted Answer

The reaction shows the cleavage of an alkene with ozone followed by reduction with dimethyl sulfide. This is a classic ozonolysis reaction which cleaves the C=C bond and forms carbonyl compounds. In this case, the reaction will give a ketone (II) as the major product, along with two aldehydes (I and III) as minor products. IV is not a possible product given the starting material. The enantiomer of II will also be formed due to the formation of a chiral center in the reaction. However, since the question does not specify which enantiomer, we cannot determine if it is a major or minor product.

What Is the Major Product Obtained from the Following Reaction