Question

An alkene having molecular formula \( {C}_7{H}_{14} \) was subjected to ozonolysis in the presence of zinc dust. An equimolar amount of the following two compounds was obtained. The IUPAC name of the alkene is:
 

• A. 3,4-dimethyl-3-pentene
• B. 3,4-dimethyl-2-pentene
• C. 2,3-dimethyl-3-pentene
• D. 2,3-dimethyl-2-pentene

Hint:

The product distribution of ozonolysis can help deduce the structure of the original alkene, especially when equimolar amounts are formed.

Answer 1

The Correct Option is D

Step 1: Ozonolysis of alkenes cleaves the carbon-carbon double bond, yielding two carbonyl compounds. The formation of equimolar amounts of the products indicates that the alkene has symmetrical substituents.
Step 2: The molecular formula \( {C}_7{H}_{14} \) suggests a simple alkene with two methyl groups attached to the main chain.
Step 3: The correct IUPAC name of the alkene is 2,3-dimethyl-2-pentene, which contains two methyl groups at the 2nd and 3rd positions on the pentene chain.