Question

Which alkene on ozonolysis gives CH₃CH₂CHO and

• A.
• B. CH₃CH₂CH = CHCH₂CH₃
• C. CH₃CH₂CH = CHCH₃
• D.

Answer 1

The Correct Option is A

To determine which alkene gives the specified products on ozonolysis, we first need to understand the reaction and its outcomes:

Ozonolysis is a reaction where an alkene reacts with ozone (O₃) to form a molozonide, which rearranges to produce a carbonyl compound. In this reaction, the C=C double bond of the alkene is cleaved, producing aldehydes and/or ketones as products.

The given products are CH₃CH₂CHO (propanal) and acetone \((\text{CH}_3\text{COCH}_3)\).

To find the correct alkene, let's consider the possible structures:

1. The structure producing propanal would split to give a fragment with CH₃CH₂CH=, indicating that the propanal is part of a longer chain.
2. The structure producing acetone would have =CHCH₃ at the other end.

Based on these observations, the structure should look something like CH₃CH₂CH=CHCH₃. This matches with one of the options given, aligning with both propanal and acetone formation:

When ozonolysis occurs:

• The double bond in CH₃CH₂CH=CHCH₃ breaks, forming CH₃CH₂CHO (propanal) and CH₃COCH₃ (acetone).

Thus, the correct answer is: