After ozonolysis of benzene (not hydrolysis) , the product is

Options

A. Benzene triozonide
B. Glyoxal
C. Ethanediol
D. All of them

Answer

To solve the question regarding the product formed after the ozonolysis of benzene, we can follow these steps:

### Step 1: Understanding Ozonolysis
Ozonolysis is a reaction involving the cleavage of double bonds in alkenes or aromatic compounds using ozone (O3). In the case of benzene, which is an aromatic compound, the reaction involves the breaking of the carbon-carbon bonds in the benzene ring.

**Hint:** Remember that ozonolysis typically results in the formation of carbonyl compounds.

### Step 2: Reaction with Ozone
When benzene undergoes ozonolysis, ozone reacts with the benzene ring. The benzene structure is C6H6, and upon ozonolysis, the aromatic nature of the ring allows for the formation of carbonyl groups.

**Hint:** Consider the structure of benzene and how the ozonolysis will affect the carbon atoms in the ring.

### Step 3: Formation of Glyoxal
The ozonolysis of benzene leads to the formation of two carbonyl groups (CHO) at the positions where the ring was cleaved. Specifically, the product formed is glyoxal (C2H2O2), which has the structure O=CHO-CHO. Since there are three positions where the benzene can be cleaved, three moles of glyoxal are produced.

**Hint:** Keep in mind that glyoxal is a compound with two aldehyde groups.

### Step 4: Conclusion
Thus, the final product after the ozonolysis of benzene is glyoxal, and we can summarize that the reaction produces three moles of glyoxal.

**Final Answer:** The product after ozonolysis of benzene is glyoxal.