Question

Which of the following organic compound produces acetone and formaldehyde during reductive ozonolysis ?

• A. But-1-ene
• B. 3-Methylbut-1-ene
• C. 2-Methylbut-2-ene
• D. 2-Methylprop-1-ene

Answer 1

The correct option is D 2-Methylprop-1-ene

Ozonolysis of alkenes involves the addition of an ozone molecule to an alkene, to form an ozonide. Formed ozonide gets cleaved by $Zn-H_{2}O$ to smaller oxidised molecules.

To find the compound involved in ozonolysis just eliminate the oxidised part (i.e. oxygen) of products and combine them with a double bond.
This is shown clearly in the below diagram,

Thus, for the above ozonolysis products, the reactant is 2-Methylprop-1-ene.