Question

What happens when butene-1 is treated with ozone followed by hydrolysis?

Answer 1

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Ozonolysis of the alkene produces the ozonide, and its hydrolysis creates two carbon-oxygen double bonds and hydrogen peroxide. In the presence of some reducing agent as Zn, hydrolysis of the ozonide produces carbonyl compounds without any hydrogen peroxide.

Hydrolysis of ozonide of but-1-ene gives the formaldehyde and propionaldehyde.

The correct option is C.

Answer 2

Answer:

The ozonolysis of 1-butene on hydrolysis gives propionaldehyde and formaldehyde.

Explanation:

Ozonolysis:

When an ozonide is hydrolyzed in the presence of zinc dust, it produces two compounds, each of which contains a C=O bond. Ozonolysis is the process by which the double bond in alkenes is transformed to the single bond.

Butene-1 is react with ozone:

• When an alkene is made to react with an ozone molecule after being hydrolyzed, ozonide is created.
• Ozone an oxygen triatomic molecule, can be found in the stratosphere, around 20 kilo meter above the earth's surface.
• When Alkene is reacted with the ozone molecule, the double bond present in the alkene between the C=C is converted to single C-C single and results in the formation of structure called as the ozonide
• When it is made to undergo hydrolysis in the presence of Zn dust , it results in the formation of two compounds and each of them contains one carbon-oxygen bond.

Consider the ozonolysis reaction of the 1-butene. The reaction occurs as

1 Butene + ozonide     ->    propionaldehyde + formaldehyde.

                            (Hydrolysis)

The chemical reaction has given below.

Final answer:

The ozonolysis of 1-butene on hydrolysis gives propionaldehyde and formaldehyde.

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