Ozonolysis of an organic compound gives formaldehyde as one of products. This confirms the presence of

Options

A. two ethylenic double bonds
B. an isopropyl group
C. an isopropyl group
D. an acetylenic triple bond.

Answer

To solve the question regarding the ozonolysis of an organic compound that yields formaldehyde as one of its products, we can follow these steps:

### Step 1: Understand Ozonolysis
Ozonolysis is a reaction where alkenes and alkynes react with ozone (O3) to form carbonyl compounds. The reaction involves the cleavage of carbon-carbon double or triple bonds, resulting in the formation of carbonyl groups (C=O).

**Hint:** Recall that ozonolysis is specifically used to break down unsaturated hydrocarbons.

### Step 2: Identify the Product
The question states that formaldehyde (HCHO) is one of the products of ozonolysis. This indicates that at least one of the carbon atoms involved in the double bond must be capable of forming formaldehyde upon cleavage.

**Hint:** Formaldehyde is the simplest aldehyde, which suggests that one of the carbon atoms in the double bond must be a terminal carbon.

### Step 3: Analyze the Possible Structures
To produce formaldehyde, the original organic compound must have a structure that allows for the formation of a terminal carbonyl group. This typically occurs when there is a vinyl group (an alkene with a double bond between two carbon atoms, where one of the carbons is attached to another carbon).

**Hint:** Look for structures that have a double bond between a carbon that can lead to a terminal carbonyl group.

### Step 4: Determine the Presence of a Vinyl Group
The presence of a vinyl group (C=C) in the starting material is crucial. When ozonolysis occurs, the cleavage of the double bond can lead to the formation of formaldehyde from a terminal carbon.

**Hint:** A vinyl group is characterized by having a double bond between two carbon atoms, where one carbon is connected to a hydrogen atom.

### Step 5: Conclusion
Given that ozonolysis of the organic compound produces formaldehyde, we can conclude that the presence of a vinyl group in the compound confirms this outcome. Therefore, the correct answer is that the ozonolysis confirms the presence of a vinyl group.

**Final Answer:** The presence of a vinyl group.